HyDraw CAD from VEST,inc is powered by Autocad OEM engine, with standard 2D Autocad® commands.

Here are some useful options to customize your HyDraw:

PICKADD
diby typing PICKADD, standard value is 2. Pickadd accepts 0,1 and 2 values
0 : each new selection removes previous selections. To select more objects you need to press SHIFT.
I find this setting useful when I need to check model properties because I don’t need to press ESC everytime I need to unselect a symbol

1: each new selections is added to previous selections. To delete an object from selection: press SHIFT

2: like option 1, but if you use SELECT command, selected object will remain “selected” when you exit the command.

KEYBOARD SHORTCUTS:
It is possible to create keyboard shortcuts for those commands you are using more frequently. You need to edit file hydraw.pgp inside directory C:Program FilesVESTHyDraw CAD600Support
Inside that file you can find all standard shortcuts for Autocad commands (M for MOVE, CP for COPY, …)

RESETCON:
by typing RESETCON, each connection line you select gets corrected.

RE:
to regenerate connections, useful if you replace a symbol without drawing new connection lines

LTS: 
with LTS you can change global line scale for your drawing