The Edit > Selection menu provides commands to operate on the selection.

###### The Edit Selection menu

###### Edit Selection menu commands

Menu command | Keystroke | Description
Tabify | Ctrl+K, Tab | Convert space characters in the selection to tabs according to the tab settings for the language.
Untabify | Ctrl+K, Space | Convert tab characters in the selection to spaces according to the tab settings for the language.
Make Uppercase | Ctrl+Shift+U | Convert the letters in the selection to uppercase. If there is no selection, CrossStudio converts the character to the right of the cursor to uppercase and moves the cursor right one character.
Switch Case | Ctrl+U | Switches the letter case of letters in the selection; that is, uppercase characters become lowercase, and lowercase become uppercase. If there is no selection, CrossStudio switches the letter case of the character to the right of the cursor and moves the cursor right one character.
Comment | Ctrl+/ | Prefixes lines in the selection with language-specific comment characters. If there is no selectiom, CrossStudio comments the cursor line.
Uncomment | Ctrl+Shift+/ | Removes the prefixed from lines in the selection that contains language-specific comment characters. If there is no selectiom, CrossStudio uncomments the cursor line.
Increase Line Indent | Tab | Increases the line indent of the selection. If there is no selection, the cursor is moved to the next tab stop by inserting spaces or a tab character according to the tab settings for the document.
Decrease Line Indent | Shift+Tab | Decreases the line indent of the selection. If there is no selection, the cursor is moved to the previous tab stop.
Align Left | Ctrl+K, Ctrl+J, L | Aligns all text in the selection to the leftmost non-blank character in the selection.
Align Center | Ctrl+K, Ctrl+J, C | Centers all text in the selection between the leftmost and rightmost non-blank characters in the selection.
Align Right | Ctrl+K, Ctrl+J, R | Aligns all text in the selection to the rightmost non-blank character in the selection.
Sort Ascending |  | Sorts the selection into ascending lexicographic order.
Sort Descending |  | Sorts the selection into decending lexicographic order.