Special Indicator Columns
Qedit leaves columns 3 and 4 of the text lines for you to enter cut-and-paste operators (i.e., MM, CC, HH, etc.). Also, Qedit may print one of two special indicators in these columns:
| ! | line extends beyond the visible right margin |
| ? | line contains control characters, shown as dots |
An ! means the line extends beyond the right terminal margin. To shift the screen image left, type Set Left 55 at the Visual home line and press F7.
A ? means the line contains nonprinting characters such as Nulls, Escapes, Bells, Tabs or possibly Roman-8 extended characters. Qedit replaces these characters with dots (.) in Visual mode, and does not allow you to make changes. These ? lines are not updated when you press Enter.
To edit Bells, Escape sequences, Tabs, ShiftOuts and ShiftIns in Visual, use Set Vis Bell, Set Vis Esc, Set Vis Tab, Set Vis SO and Set Vis SI. All these specify substitute characters to be shown instead of dots. To edit other control codes, use Modify or Change from the ===> line. If you turn Set Editinput Extend Off, Qedit regards Roman-8 characters as nonprinting noise and show them as dots.