Drawing Fundementals

8/4/2019 Drawing Fundementals

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Drawing Fundamentals

This chapter describes the functionality available in Drawing mode for creating drawings of

Pro/ENGINEER models and the logistics affecting the creation and management of drawings.

Topic

Drawing Functionality

Drawing Interfaces

Drawing Setup File Options

Working with Multiple Windows

Customizing Your EnvironmentRetrieving in View-Only Mode

Storing Drawings

Regenerating Views and Drawings

Drawing and View Scales

Multi-Sheet Drawings

Assembly Drawings

Drawing Information

Drawing Functionality

Using Drawing mode within Pro/ENGINEER, you can create drawings of all Pro/ENGINEER

models or import files from other systems. All model views in the drawing are associative: if you

change a dimensional value in one view, the system updates other drawing views accordingly.Moreover, Pro/ENGINEER associates drawings with their parent models. The model

automatically reflects any dimensional changes that you make to a drawing. In addition,

corresponding drawings also reflect any changes that you make to a model (such as the additionor deletion of features and dimensional changes) in Part, Sheetmetal, Assembly, or

Manufacturing modes.

Pro/ENGINEER offers functionality for working with engineering drawings in two separate

components: Drawing mode and Pro/DETAIL. The following sections provide a brief overviewof each.

Drawing Mode
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Drawing mode, available with basic Pro/ENGINEER, provides you with the basic functionality

to document your solid models or surface models in drawings that share a two-way associativity

with the model. When you make changes to the model in Part or Assembly mode, the systemautomatically updates the drawing and reflects the changes; likewise, any changes that you make

to the model in Drawing mode become immediately visible on the model in other modes. You

can use basic Pro/ENGINEER to create drawing views of one or more models in severalstandard view types and dimension them. You can also annotate the drawing with notes,

manipulate the dimensions, and use layers to manage the display of different items.

Pro/DETAIL

Pro/DETAIL, the optional add-on module, extends the drawing capability offered byPro/ENGINEER. You can use it with basic Pro/ENGINEER or as a standalone module to create,

view, and annotate models and drawings.

Pro/DETAIL supports additional view types and multi-sheets, offers numerous commands for

manipulating items in a drawing, and enables you to add and modify different kinds of textualand symbolic information. In addition, you can use it to customize engineering drawings with

sketched geometry, create custom drawing formats, and make multiple cosmetic changes to

drawings.

With a license for Pro/DETAIL, you can also use a pop-up menu to modify any object in adrawing from anywhere in the menu tree. At any time when a drawing window is active, you can

interrupt your current process and activate a drawing object for modification (for more

information, see Modifying Items Using the Pop-Up Menu).

Drawing InterfacesWith a license for Pro/INTERFACE or Pro/DETAIL, you can access various

interface commands for exporting drawing files to other systems and

importing files into Drawing mode. Using the File menu in the

Pro/ENGINEER menu bar, you can do the following:

By choosing Export and Model, you can export the following models fromDrawing mode to a data file: IGES, DXF, DWG, SET, STEP.

By choosing Export and Image, you can export the following images from

Drawing mode to a data file: CGM, TIFF, JPEG, shaded, EPS, Snapshot. By choosing Import and Create New Model, you can import the following

data into a new model in Drawing mode: IGES, SET, VDA, Neutral, CADAM,STEP, CATIA, PDGS, CGM, ECAD.

By choosing Import and Append to Model, you can append the followingdata to the active object: IGES, SET, DXF, STEP, CGM, TIFF, DWG.
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To create groups of entities that maintain their group associativity through an IGES export,

choose IGES Groups from theDWG SETUPmenu. The IGES Groups command is not

available in Report mode. For information about exporting or importing a particular file type, seethe appropriate chapter in theInterface Guide.

Drawing Setup File OptionsPro/ENGINEER saves drawing setup file options with each individual drawing and drawingformat. These setup file options determine such characteristics as the height of dimension and

note text, text orientation, geometric tolerance standards, font properties, drafting standards, and

arrow lengths.

The system gives default values to these setup file options, but you can modify them tocustomize a drawing, and save them to use in other drawings. It saves (and retrieves) the values

in a drawing setup file named ``filename.dtl.'' The file that you specify in the configuration file

option ``drawing_setup_file'' establishes the default drawing setup file option values for anydrawing that you create during a Pro/ENGINEER session. If you do not set this option, the

system uses the default drawing setup file option values. If you have a license for Pro/DETAIL,

you can install sample drawing setup files for DIN, ISO, and JIS from the loadpoint/text

directory with the following names:

``din.dtl'' ``iso.dtl'' ``jis.dtl''

Retrieve these setup files to set the desired environment in your drawing. For a complete list of

drawing setup file options and their values, see Drawing Setup File Options.

Note:

A drawing format always has its own setup file--independent of the drawing's setup

file--but it is restricted (see Using Formats in a Drawing).

Working with Drawing Setup Files

Using the DTL SETUP menu, you can create, retrieve, modify, and save drawing setup files.

When you retrieve an existing drawing setup file, Pro/ENGINEER reads in its values to the

current drawing.

How to Create a Drawing Setup File

1. ChooseDRAWING > Advanced > Set Up > Draw Setup > Create.2. Type the name of the new drawing setup file. The current default drawing

setup file appears on the screen in the Editor Window, as shown in the
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following figure. Notice that the options are organized in the list according tothe function that they perform.

Note:

The configuration file option ``drawing_file_editor'' specifies the default texteditor. To use an editor other than the system editor, specify the user-defined

editor command as the value for the configuration file option

``pro_editor_command.''

Sample Drawing Setup File

3. After editing the file, exit the editor, but save any changes.4. From the Pro/ENGINEER View menu, choose Repaint. The system redraws

the drawing using the parameter values of the new drawing setup file andsaves the new file to the current directory for use by other drawings.


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How to Retrieve a Drawing Setup File

1. Choose DRAWING > Advanced > Set Up > Draw Setup > Retrieve.2. Choose a drawing setup file from the namelist menu.3. From the Pro/ENGINEER View menu, choose Repaint or Regen View. The

system redraws the drawing using the parameter values of the retrieved file.

Using the configuration file option ``pro_dtl_setup_dir,'' you can specify the complete path to thedirectory that contains your setup files. When you choose Retrieve from the DTL SETUP menu,

followed by Setup Dir, Pro/ENGINEER automatically brings you into the directory that

contains your drawing setup files. If you do not specify the pathname using this configurationfile option, it brings you into the default setup directory.

How to Modify the Current Drawing's Setup File Values

1. Choose DRAWING > Advanced > Set Up > Draw Setup > Modify Val. Thecurrent drawing's setup file option values appear on the screen in the default

text editor.2. Edit the values and exit, but save any changes.3. From the Pro/ENGINEER View menu, choose Repaint or Regen View. The

system redraws the drawing using the new setup file option values.

Note:

If you modify the current drawing's setup file option values, the system

modifies only the current drawing. It does notmodify drawing setup files on

the disk unless you save the current values by choosing Save.

How to Save a Drawing Setup File to Disk

1. Choose DRAWING > Advanced > Set Up > Draw Setup > Save.2. Type a filename. If it exists, Pro/ENGINEER asks if you want to replace the

current file. The system creates a new drawing setup file with the name``filename.dtl,'' containing the setup file option values of the current drawing,and writes it to the directory from which you started Pro/ENGINEER.

Working with Multiple Windows

You can show multiple drawing sheets in multiple windows (or the same sheet in multiplewindows) and select any window.

How to Work in Multiple Windows

1. From the Pro/ENGINEER Windows menu, choose New.2. Type the sheet number to appear in the new window. You can also add a new

sheet to the drawing. The new window appears with the selected sheet.


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You can select in multiple windows using commands in the GET SELECT menu, but keep in

mind the following:

You can select from any active sheet in any window. For example, you canselect details to delete in all windows.

If you select an item in a window other than the current window, the systemswitches you to the selected window permanently. For example, if you selecta dimension in a window, that window becomes current and you can thenlocate the dimension.

When you are working with multiple windows, Pro/ENGINEER simultaneously reflects the

changes in all windows of the same drawing for the following types of objects:

Dimensions Notes Axes Symbols

Datums Views

The system also simultaneously reflects the following procedures in all windows of the samedrawing:

Modifying the color of draft entities, cosmetic features, notes, or symbolinstances

Creating or modifying a draft entity Manipulating draft datums Deleting geometric tolerances

Customizing Your Environment

Many configuration file options and several commands in the Environment dialog box control

the display of items in a drawing and access to files. Environment dialog box settings supersede

configuration file settings. Therefore, if you seldom use a particular command (such as thedrawing grid), you might use the configuration file option to keep it cleared, and use the

Environment dialog box button only when you decide to use the drawing grid. For more

information, see.

Retrieving in View-Only ModeIf you have a license for Pro/DETAIL, you can significantly reduce the amount of time it takes to

retrieve a drawing or report by using View-Only mode. The system does not retrieve any of the

associated solid models if you retrieve a drawing by choosing Open from the Pro/ENGINEER

File menu, and then select the Retrieve Drawing as View Only check box from the list in the


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upper-right corner of the File Open dialog box. Because the solid models are not in session, the

system temporarily freezes the drawings, so you cannot modify them.

If you set the configuration file option ``save_display'' to ``yes,'' the system stores view geometryand detail items such as solid dimensions, and displays them when it retrieves the drawing in

View-Only mode. If you set this option to ``no,'' it does not display them. However, instead ofmodifying your configuration file, you can select Save Display from the Environment dialog box

since it performs the same function.

When working in View-Only mode, keep in mind the following restrictions:

If the geometry display of a view is missing, the system displays an emptyview boundary.

Since Pro/ENGINEER does not retrieve any of the associated solid models,plotting (for example, complex overlap checking) does not function the sameway that it does in Drawing mode because much of the information ismissing.

If you retrieve a drawing that is already in memory into the current window ina different mode (for example, the drawing is in View-Only mode, and youretrieve it using Search/Retrieve,or vice versa), the drawing remains in itsoriginal mode and Pro/ENGINEER displays a warning message.

You cannot modify or store drawings unless you use Retr Models in theVIEWONLY DRW menu to retrieve all of the models.

If you store the display with snap lines in Drawing mode, the system plotsthem in View-Only mode.

On a multi-sheet drawing, if you retrieve only one sheet, but you want tostore the display, the system gives you only the display of one sheet becauseit has not yet regenerated the other views.

To regenerate all sheets, choose Regen View from the Pro/ENGINEER View

menu and All Sheets. You must do this manually before storing the drawing

if you want the View-Only functionality to work for all sheets.

If you save the display (by selecting Save Display from the Environmentdialog box or setting the configuration file option ``save_display'' to ``yes''),Pro/ENGINEER does not have to calculate the view display. As a result, youcan significantly reduce the retrieval time in Drawing mode.

How to Display a Drawing in View-Only Mode

1. Save existing display information by selecting Save Display from theEnvironment dialog boxor setting the configuration file option``save_display'' to ``yes.'' To regenerate an entire view or the display for thecurrent sheet (or all sheets), choose View > Regen View fromthePro/ENGINEER menu bar.

2. Choose File > Save tosave your drawing with the display information youneed.


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3. Choose File > Open; then select the Retrieve as View Only check boxfrom the list in the upper-right corner of the File Open dialog box.

4. Retrieve the drawing. The system displays the drawing in View-Only mode.Choose Sheet to move to another sheet.

5. To determine if any display information is missing, chooseDrawing >Display Info from the Pro/ENGINEER Info menu. If all information is there,

the system displays a message. If any is missing, it displays a text window,identifying the missing information.

To modify a drawing in View-Only mode, you must choose Retr Models from the VIEWONLY

DRW menu. The system enters Drawing mode and retrieves all drawing models for the currentdrawing.

Storing Drawings

Pro/ENGINEER saves some of the entities and information that you can create or modify in a

drawing with the model, rather than with the drawing. This is important, since such changesmade to the drawing could affect the model that it documents. For example, when you set a

dimension as basic, the dimension becomes theoretically exact, and the system removes any of

its tolerances.

Pro/ENGINEER saves with the drawingstrictly cosmetic information such as the following:

All draft entities The view in which an entity appears The placement of an entity on the sheet Jogs and breaks in leaders and dimension lines

The insertion of dimensions in notes The font, height, width, and slant angle of text

However, it saves with the modelmuch of the information you add to a drawing, such as the

following:

Geometric tolerances (you can also save them in the drawing) Dimension information (also reference and driven dimensions), including the

following:o Additional texto Standard/ordinate dimension typeo Attached geometric tolerance listo Attached set datum or axis referenceo Value and tolerance informationo The difference between the primary and secondary units, when you

have explicitly set themo Basic and inspection attributeso Set datum and axis informationo Datum target point informationo Surface finishes, including type and value


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o Simplifications (using By View and All Views)o Layer membership information for all entities in the model

Disallowing Changes Affecting the Model

Whenever you save a drawing after making changes that affect the model, Pro/ENGINEER savesthe model with the drawing. However, if you do not make changes to a model, and you want to

save the drawing without storing the model, set the configuration file option

``save_modified_draw_models_only'' to ``yes.''

To disallow changes made in Drawing mode that affect the model, set the configuration fileoption ``draw_models_read_only'' to ``yes.'' In this case, when you attempt to make a change that

affects the model, Pro/ENGINEER issues a warning and does not make the modification.

Regenerating Views and Drawings

When you regenerate a drawing, Pro/ENGINEER recreates the drawing and the model that it

represents; it does not simply redraw them. Consequently, if you changed any of the model's

dimension values in Drawing mode, the system updates the model to reflect these changes when

you regenerate the drawing. The regenerated drawing displays the updated model and anychanges that you made to it. When you repaint a drawing, the system redraws the screen, but

does not recreate the model. For more information about repainting and regenerating, seeIntroduction to Pro/ENGINEER.

If you create driven dimensions or draft dimensions (seeDimensioning), you must regeneratethe drawing after you move draft entities and when you want to show changes made to the

drawing setup file option ``draft_scale'' (seeDrawing Setup File Options). Regeneratingthe drawing updates the driven dimensions and snaps back the associated dimensions to the draft

entities. If you use driven dimensions in model relations, you must regenerate the model in thedrawing to update them.

Regenerating a View

The Regen View command in the Pro/ENGINEERView menu works together with the

configuration file option ``auto_regen_views.'' When you set it to ``yes,'' the systemautomatically updates the drawing display by a repaint when you change from one window to

another, such as when you modify a model in a subwindow while you are working on a drawingin the main window. You can repaint or regenerate the drawing to reflect changes made to the

model. When you regenerate it, the system updates the model to reflect the changes made in thedrawing.

Using Regen View
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If you set the value of ``auto_regen_views'' to ``no,'' you can update only the drawing by

choosing Regen View from the View menu in the Pro/ENGINEER menu bar and Pick View,

Current Sheet, orAll Sheets. Neither the Repaint command in the View menu nor theRegenerate command in the DRAWING menu updates the drawing when you have this option

set to ``no,'' even if you make the change to the model in Drawing mode (such as modifying a

dimension value).You can select as many views as you want to regenerate at the same time.

If you try to modify a view that you have not updated, Pro/ENGINEER displays an error

message informing you that it is not going to effect the change to the drawing until you apply the

Regen View command to the view. When you regenerate a parent view, its child views do not


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regenerate; you must individually select each view on the drawing, including detail views.

Whenever you save changes to the model, the system displays them on the drawing the next time

that you retrieve it, regardless of whether you regenerated the drawing views.

How to Regenerate a Drawing View After Making a Change to the Model

1. From the Pro/ENGINEER menu bar, choose View > Regen View > AllSheets or select the view(s) that you want to update. The system highlightseach view with a magenta border when you select it.

2. Choose Done Sel when you have finished. The system regenerates theselected views and reflects the changes made to the model.

Regenerating a Model

Whenever you change a model, use the Regenerate command to regenerate it and to update

drawing views accordingly. Using this command, you can also update associative draft

dimensions when draft entities change.

How to Regenerate a Model or Draft Dimensions

1. Choose DRAWING > Regenerate.2. Do one of the following:

o To update the model and redraw all views accordingly, chooseREGENERATE > Model.

o To regenerate only associative draft dimensions, choose REGENERATE> Draft (this command does notregenerate a model, even if youchange it).

Drawing and View Scales

You can use two types of scales in a drawing: global (when adding views using the No Scale

command) and individual view (when adding views using the Scale command).

With a global scale (or drawing scale), the system scales drawings accordingto the drawing SCALE parameter at the bottom of the drawing sheet. Forexample, a value of .25 means that it scales the drawing views at one-quarterof the actual size of the model. You can set a default drawing scale using theconfiguration file option ``default_draw_scale,'' or you can override your

settings by modifying the scale. With an individual view scale, the system gives views an individual scale

factor that appears below each view, shown in a note ``Scale value.'' Whenyou modify the drawing scale, these views do not change, since the scalefactors are independent.


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When you change the size of the drawing, the drawing scale changes to match, to keep the views

in proportion to the size of the sheet. However, detailed and scaled views retain their original

scale regardless of changes to the drawing size.

View Scales Driven by Relations

You can use relational expressions to drive a view scale of a view that you placed using the

Scale command; however, you cannot use them to drive any views that you scale globally using

the No Scale command. When you type a relational expression for the view scale, the systemcalculates the expression and retains the information. This functionality enables you to relate the

view scale using dimensions within the model. The system stores the relation with the model and

updates the view scale each time the dimension in the model changes, along with all itemsrelated to it.

Note:

When you rescale a scaled drawing view, Pro/ENGINEER also rescales all relatedparent/child views (projected views, broken views, etc.).

How to Modify the Relational Expression for the View Scale

1. Choose DETAIL > Modify > Value.2. Select the view scale in the lower-left corner using the right mouse button.3. Type the real value or relational expression and press ENTER.

Note:

When using a relational expression, type onlythe right-hand side of theexpression. The system calculates the left-hand side as the view scale.

Drawing Scale Format

You can express drawing scales in a decimal or fractional format by setting the drawing setup

file option ``view_scale_format'' (``decimal format'' is the default). To establish the pattern of

fractional scales, use the drawing setup file option ``view_scale_denominator'' (see DrawingSetup File Options, for more information).

Multi-Sheet DrawingsIf you have a license for Pro/DETAIL, you can use the Sheets command in the DRAWING

menu to create multiple sheet drawings and move items from one sheet to another. You can view

the sheets of a multi-sheet drawing using basic Pro/ENGINEER. If a drawing has more than onesheet, an additional tag, SHEET #OF [], appears at the bottom of the main window.
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When working with multi-sheet drawings, keep in mind the following:

When you switch a projection view to another sheet, it becomes independent.You can then move the parent view, and the system does not update theprojection view on another sheet. If you switch these views again to the samesheet, the projection view immediately becomes a child of the parent.

You can change drawing scales on each sheet independently. When you change the scale on a sheet, partial views on other sheets do not

change. If you erase a view on one sheet, you can resume it on any other sheet.

Adding and Removing Sheets

To add a sheet to a multi-sheet drawing, choose Add from the SHEETS menu. Pro/ENGINEERautomatically adds a new sheet to the end of the drawing.

How to Remove Sheets from a Multi-sheet Drawing

1. Choose SHEETS> Remove.2. Type the number of sheets to remove. You can separate them by using

commas or dashes and insert spaces anywhere, for example, [1,3-5,12,15-20]. The number to the left of a dash must always be less than the number tothe right.

The system removes the specified sheets from the drawing. If it removes the currentsheet, it sets the first remaining sheet as the current sheet.

Pro/ENGINEER cancels the procedure and does not remove any sheets if you perform any of the

following actions:

Press ENTER without specifying any numbers. Use incorrect syntax in the input line. Type pairs of numbers without putting them in ascending order and

separating them by a dash. Include nonexistent sheets (however, you can include the same sheet more

than once; for example, [1-5,3-8] is the same as [1-8]). Specify the removal of all of the sheets of a drawing (if only one sheet is

present, the Remove command is not available). Specify the removal of a sheet that holds the parent view of a child view

shown on another sheet that is kept (however, you can remove both sheetsat once).

How to Reorder the Sheets in a Drawing

1. Choose SHEETS > Reorder. Pro/ENGINEER displays the range of pagenumbers for the drawing.


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2. Type a new number for the current sheet. The system rearranges the sheetsof the drawing, inserting the current sheet into the specified position in thedrawing.

Moving Items to Another Sheet

Using the Switch Sheet command in the SHEETS menu, you can move items to another sheet;

however, you cannot move draft items that have leaders attached to entities such as balloons,notes, and dimensions. If the drawing has only one sheet, the system automatically creates a

second sheet after you choose items to move.

How to Switch Items to the Same Place on Another Sheet

1. Choose SWITCH OPTS> Switch Items. The DWG ITEMS menu displays thesecommands:

o Dwg Views--Switches drawing views.

o Draft Items--Switches detail items without leaders.o Dwg Tables--Switches drawing tables.

2. Choose a command; then select items to switch.3. To confirm your selection, choose Done Sel. The system highlights the

selected items in magenta.4. Choose DWG ITEMS > Done and type the destination sheet number. You can

also start a new sheet by entering a new sheet number. If you type thecurrent sheet number for the destination sheet, the system prompts you toretype the number.

5. The items appear on the specified sheet. To continue switching items, chooseSHEETS > SwitchSheet and repeat the process.

How to Switch Items to Any Place on Another Sheet

1. Choose SWITCH OPTS> Switch/Move.2. Choose a command from the DWG ITEMS menu.3. Select items to switch. To confirm your selection, choose Done Sel. The

system highlights the selected items in magenta.4. Choose DWG ITEMS > Done and type the destination sheet number.5. Select a method of defining the translation vector by choosing the

appropriate commands from the GET VECTOR menu:o Horiz--Specifies the offset along the x-axis of the sheet.o Vert--Specifies the offset along the y-axis of the sheet.o Ang/Length--Specifies the rotation angle in the counterclockwise

direction and the offset in that direction.o From-To--Specifies the endpoints of the translation vector.

6. Items appear on the specified sheet at the indicated location. To continueswitching items, choose SHEETS > SwitchSheet and repeat the process.

Maintaining Size and Position of Drawing Models


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When switching the sheets of a two-dimensional drawing model, use the configuration file

option ``variant_drawing_item_sizes'' to control whether drawing items maintain their size and

position on paper if you change the sheet size or drawing units.

If you set this option to ``yes,'' some items scale and/or reposition to be the

same size or in the same place when you plot them on paper, while otheritems scale and/or position themselves to be the same size or in the sameplace on screen.

If you set it to ``no,'' items that you move or copy to a different sheet of thesame or different 2-D model (or items on a sheet that changes size and/orunits) retain the same size on paper and the same relative orientation as theydid previously.

Assembly Drawings

In an assembly drawing, you can show and erase assembly and part dimensions. You can also

create dimensions on individual components directly in an assembly view. However, keep inmind the following:

You can display parameters for assembly features and all assemblycomponents in assembly drawing notes, but you cannottype partparameters.

The dimensions in an assembly drawing are visible for modification onlyif theassembly for which the drawing was created is in session. For moreinformation, see Showing Dimensions in Assembly Drawings.

Resuming Cosmetics

When you suppress parts or subassemblies in an assembly drawing, the system retainsinformation about certain cosmetics of these views. When you resume them, you also resume

these cosmetics:

Dimension placement Surface finish symbol placement Parametric text in notes and symbol instances Cross-hatching cosmetics References to cross-sectional edges Detail axis cosmetics

Member, edge, and set datum display information Draft geometric tolerances that reference part datums

Drawing Information
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By choosing Drawing from the Pro/ENGINEER Info menu, you can access

information about your drawing in the following ways.

Highlight currently displayed entities using filters. Output geometric and cosmetic information about an entity. Write a note to a file. Display grid angle and spacing values. Obtain information about out-of-date displays in the drawing.

How to Access Drawing Information

1. Choose Info > Drawing.2. Do one or all of the following, as necessary:

o Choose Highlight By Attributes to highlight currently displayed

entities using these filters: Entity type Storage location (the drawing or a 3-D model) Layer Dimension type View association

Highlight by Attributes Dialog Box


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o Choose Entity Info to obtain geometric and cosmetic informationabout a selected entity on screen. Choose File > Save to write theinformation to a file named entity.inf, or choose File > Save As towrite the information to a designated file.

o Choose Write Note to write a note to a file (see Writing Notes to aFile).

o Choose Grid Info to display the grid angle and spacing values.o Choose Display Info to obtain information on screen about out-of-date

views currently displayed, along with a recommended action to updatethe drawing (such as repainting or regenerating). Choose File > Saveto write the information to a file named display.inf, or choose File >Save As to write the information to a designated file.
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Documents

Drawing Fundementals