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### Define

There are 2 ways to define constraints for geometrical objects:

- manual definition - the REMEMBER command

- automatic definition - the Auto constraint mode

Each of these two ways has its application.
If you want to construct freely and not want to care about logical connections with respect to the construction, we recommend to manually fix the constraints after the geometry is created.
A lot more efficient is the proceeding when the user saves the constraints during the creation of geometry with the help of the auto constraint mode. A manual correction can become necessary.

Manual definition
The most important command for the manual determination of constraints is the REMEMBER command. The operands for this command are all constraints mentioned up to now (REMEMBER DISTANCE, .. ,REMEMBER VERTICALITY).
To receive the desired constraints you either have to identify the involved objects for which the constraint shall apply or to state polylines for a certain zone in which the desired constraint shall be searched.
When directly entering the objects, they will be put into relation after termination of the command and the stated constraint is saved for these objects. Two lines, for example, that have been identified with the command REMEMBER PARALLELISM will then be parallel to each other. When stating polylines SISCAD-P saves all those objects for which the chosen constraint applies.
The determination of constraints can also be achieved with the corresponding menu within the main menu Dynamic Variation and Setting of Constraints.
Automatic definition
If this mode is active, i.e. the symbol auto constraint mode is green,

the constraints for all newly created objects activated in the constraints menu will be checked and saved, if required.
This menu will be displayed by clicking into the main menu.