Editing and Viewing Chat Text

Delete-Backspace Delete character to right / left of cursor.
Shift-Delete Deletes the current chat line.
Shift-End Move cursor to end of chat line.
Shift-Home Move cursor to start of chat line.
Shift-Insert Replaces current chat line.
Shift-Left/Right Arrow Move cursor left / right.
Shift-Page Up/Page Down Scroll up / down through chat text.
Shift-Up/Down Arrow Scroll chat history up / down.
All work done by Hazimil Skelyd, Ancient Dominion, Antonius Bayle