Cycling through Options
The F4 function key is used to cycle through the following options specific to the contents of the marker:
• When the marker contains an input box, F4 toggles the input box on and off.
• When the marker contains an integral, summation, or product, F4 toggles any limits between two positions—the top (or bottom) of the symbol and superscript (or subscript) position.
• When the marker contains an expression that includes a pair of delimiters, F4 cycles through three steps:
1. First it turns off the right delimiter.
2. Then it turns off the left delimiter.
3. The next time you press F4 both delimiters reappear.
• When the marker contains a relation,
F4 negates the relation. For example, = becomes
. Note that there are negated relations symbols available under the AMS-TeX options.
• When the marker contains a single delimiter, F4 cycles through the five available sizes of that delimiter.
• When the marker contains TeX-input, F4 allows you to edit the TeX.