Use this toToggle the folded section at the cursor
Before invokingA document must be open to use this option.
Menu pathEdit > Code Folding > Expand/Collapse Fold
Command nameMFoldingToggle
Accelerator keyO (from the main menu: Alt+E > O > O)
Keyboard shortcutShift+Alt+F2
Options on parent menu (Code Folding+)Expand/Collapse Fold, Expand Fold, Collapse Fold, Flip All Folds, Expand All Folds, Collapse All Folds, Flip Selected Folds, Expand Selected Folds, Collapse Selected Folds