- multiple fixes in the Tcl commands (especially regarding the interchange between True/false and 1/0 values)

- updated the help for all Tcl Commands
- in Tcl Shell, the 'help' command will add also a brief description for each command in the list

tclCommands/TclCommandSetSys.py

@@ -14,6 +14,8 @@ class TclCommandSetSys(TclCommand):
     # List of all command aliases, to be able use old names for backward compatibility (add_poly, add_polygon)
     aliases = ['set_sys', 'setsys']
 
+    description = '%s %s' % ("--", "Sets the value of the specified system variable.")
+
     # Dictionary of types from Tcl command, needs to be ordered
     arg_names = collections.OrderedDict([
         ('name', str),
@@ -30,7 +32,7 @@ class TclCommandSetSys(TclCommand):
 
     # structured help for current command, args needs to be ordered
     help = {
-        'main': "Sets the value of the system variable.",
+        'main': "Sets the value of the specified system variable.",
         'args': collections.OrderedDict([
             ('name', 'Name of the system variable. Required.'),
             ('value', 'Value to set.')