*
(asterisk)

Causes the command to repeat automatically without pressing Enter to restart.

!
(exclamation point)

Cancels the previous command.

An exclamation point (!) and a space in the beginning of a macro cancels any previous command. At other locations, it cancels the macro. If necessary, the exclamation point can be used at the end of the macro.

_
(underscore)

Runs command as English command name.

Rhino can be localized in many languages. The non-English versions will have commands, prompts, command options, dialog boxes, menus, etc., translated into their respective languages. English commands will not work in these versions.

For scripts written in English to work on all computers (regardless of the language of Rhino), the scripts need to force Rhino to interpret all commands as English command names.

For example: In the English version of Rhino, the following macro works:

Circle 3Point 0,0,0 1,1,0 0,3,0

But in the French version of Rhino, this won't work. Instead you need one of these macros:

Cercle 3Point 0,0,0 1,1,0 0,3,0
_Circle _3Point 0,0,0 1,1,0 0,3,0

To make sure macros work worldwide, write them in English and put _ in front of all command names and options.

-
(hyphen)

Suppress dialog box.

All commands can be made into macros at the command line (even commands that have dialog boxes by default). To suppress the dialog box and use command-line options, prefix the command name with a hyphen (-).

'
(apostrophe)

The next command is a nestable command.

View and construction plane manipulation and object snaps are nestable. Geometry creation commands are not nestable.

One-shot object snaps and sub-object picking filters are automatically nestable and do not require an apostrophe.

/
(backslash)

If the first character in a toolbar macro is not "!" and the last character is" /", the script runs on the command line without Enter, so more information can be added.

This feature is useful for building a command string out of parts like digits, decimal points, angles (such as "<45") that are on buttons, making a "numeric keypad" on the screen.

~
(tilde)

Suppresses command options for clutter free command feedback. The options still work as usual.

;

Comment.

Lines beginning with a semicolon (;) are not part of the macro, but let you document the macro or try alternative input.

For example:

; This is a test macro
_Circle 0,0,0 15
_Line 0,0,0 pause ;15,0,0
; Line 0,0,0 0,15,0
_Line 0,0,0 -15,0,0

Layer nesting is indicated by a double colon - "::" between layer names. In the -Layer command, adding a new layer nested under Layer 01 use a macro like this:

! _-Layer New "Layer 01:: New Layer" Enter

! _SelAll

Cancels all previous commands and selects all the objects currently in the model.

_Points

Runs the Points command.

_Pause

_Pause

_Pause

Allows picking three point locations.

_Enter

Simulates pressing Enter, which stops the creation of point objects.

_Invert

Inverts the selection. All visible objects in the scene were selected at the beginning of the script, so after Invert only the newly created point objects are selected.

_CurveThroughPt

Creates a polyline through the point objects.

_EnterEnd

Completes the command.

Pause

Stops for user input in a macro.

Example:

! _Circle _Pause 50

This macro asks for a point and then draws a circle with a 50 unit radius centered there.

MultiPause

Stops a script for the duration of multiple selections, for example in Join, Polyline, and FilletEdge.

Enter

Simulates pressing Enter inside a macro.

This command does not repeat the previous command like pressing Enter does.

EnterEnd

Completes the command.

SetRedrawOff

Prevents screen redraw, construction plane or camera changes during macros.

SetRedrawOn

Turns screen redraw back on after SetRedrawOff.

NoEcho

Turns off echoing of macro commands to the command history window.

Echo

Turns on echoing of macro commands to the command history window.