GeomLab commands

File Menu

Load ...: Load the contents of a text file into the GeomLab editing window.
Save: Saves the contents of the editing window in the file it came from.
Save as ...: Saves the content of the editing window in a file chosen by you.
Print image: If the Picture tab is displaying an image, print the image on a printer.
Save image: If the Picture tab is displaying an image, save the image as a PNG file.

Undo: undo the last editing operation. The same command is invoked by pressing Control-Z in the editing window.
Cut: delete the selected text and save it on the clipboard. The same command is invoked by pressing Control-X in the editing window.
Copy: copy the selected text to the clipboard. The same command is invoked by pressing Control-C in the editing window.
Paste: insert the contents of the clipboard in place of the selected text. The same command is invoked by pressing Control-V in the editing window.
Clear expression: delete the entire contents of the editing window. The same operation is invoked by clicking the Clear button beneath the editing window.

Evaluate expression: run the GeomLab program from the editing window. The same operation can be invoked by pressing Shift-Return in the editing window, or by click in the Go button beneath it.
List defined names: paste into the Results window a list of names that are defined.

Match brackets: If this option is enabled, then each closing bracket (either ')' or ']') that is typed in the bottom pane highlights all the text back to the matching opening bracket with a blue line. If the brackets do not match properly, or there are more closing than opening brackets, then the line appears in red instead. This option makes it easier to type complicated expressions, especially ones that end with a lot of closing brackets.
Larger font: This command increases the size of the text in the two panes of the main GeomLab window.
Smaller font: This command decreases the size of the text.
Count reduction steps: If this option is enabled, then GeomLab counts the number of 'reduction steps' that are needed to evaluate each expression, and the number of 'conses' used to build data structures, and displays the totals together with the value of the expression in the Results pane.