T-FLEX Parametric CAD. Fundamentals. 2D Design

Main Concepts of System Operation
The user actions remembered by the system can be undone by a certain number of steps back. This can be
done by repeatedly calling the command “UN: Undo Changes”, that brings the system back by one step.
The “UN: Undo Changes” command can be called from any other command using
or combination.
If the command “UN: Undo Changes” was called in error, there is the “RED: Redo Changes”
command in the system, which restores the undone action. The “RED: Redo Changes” command can be
called from any other command by or combination. Repeatedly
calling the command “RED: Redo Changes” brings the system into the state when undoing began.
The “UN: Undo Changes” command can be called as follows:
Keyboard Textual Menu Icon
,
,
“Edit|Undo”
The “RED: Redo Changes” command is called via:
Keyboard Textual Menu Icon
,
,
“Edit|Redo”
To cancel or repeat several actions at once, press the button on the main toolbar to the right of the icon of
the corresponding command. After pressing the button the dropping list of actions which can be canceled or
repeated will pop up. Then it is enough just to select the desired group of actions with the help of .
General Principles of Assigning Parameters. Assigning Variables to Parameters
General principles of assigning parameters
Various ways of assigning parameter values are used in element creation and editing commands. These
include using parameter dialog box and property window, as follows:
• A parameter can be assigned a constant value. For example, the parameter "Rotation angle" of a text
can be assigned 0.
• A parameter value can be substituted by the string “Default”. This means, the parameter value will be
set from the respective parameter of the command “ST: Set Model Status”. For example, the
parameters on the “Font” tab in the parameter dialog box for dimensions, roughnesses and notes will
be substituted from the “Font” tab of the command “ST: Set Model Status” when the respective
elements are displayed.
Using default parameters helps quickly modify elements of the whole drawing. For example, using
default parameters for dimensions allows to instantly change dimension display and, therefore, the
whole drawing. This can be done by modifying parameters on the “Dimensions” tab of the “ST: Set
Model Status” command.
• The values of most of various element parameters defined by number can be set using string variables
and expressions. In this case, the parameter value will be driven by the value of the variable or
expression. In this way, the value of the parameter can be changed by varying the respective variable
value. This mechanism allows changing any parameters of the following T-FLEX CAD elements: the
size of text boxes, the slanting angle, the size of arrows of the dimension leaders and graphic lines, etc.
121