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view screen options
vanumber number number vc[number] vf vl[+|-]quantity vr[+|-]quantity vsquantity vt[2|4|8] vz[number]
This command allows you to change some of the parameters associated with your screen. The parameter is specified by the character following the View (v) command. The condition register is not affected by this command.
Each parameter is briefly described in the subsection below.
This command allows you to change the attributes (color) of the three regions of your display. The first number must lie between 1 and 3 and indicates the region.
The second and third number select the foreground and background color.
| 0 - Black | 1 - Blue | 2 - Green | 3 - Cyan |
| 4 - Red | 5 - Magenta | 6 - Yellow | 7 - White |
The foreground color will be intensified if values greater than 7 are used:
| 8 - Black | 9 - Blue | 10 - Green | 11 - Cyan |
| 12 - Red | 13 - Magenta | 14 - Yellow | 15 - White |
This command is ignored when used with the monochrome display. Users with a color display may wish to add this command to the end of the file /usr/lib/ed.macros.
When used without an argument this causes your screen to be redrawn with the line your cursor is on positioned at your defined center line. You may redefine your center line by specifying a number between 1 and 23. The default macro file sets your center line at 3.
The editor keeps track of the attributes stored on each line. To increase the speed of screen updates on the console, qed will not update the attributes when it believes they have not changed. Programs which modify the screen attributes without the editors knowledge may result in permanent attributes which qed will not remove. The view full command will force qed to always update the attributes as well as the text on your screen.
This command defines your left margin. The quantity may be a simple number in which case your margin will be set to that value, or it may be a number preceded by a “+” or “-” in which case that value will be added or subtracted from the current value. This lets you define absolute or relative changes to your margin. For example:
vl+5
will increase your left margin by five and:
vl5
will define your left margin to be five. As a special case, a “.” (dot) will set your margin to the column that your text cursor is currently on.
Your left margin defines the point you will return to in your text whenever you type a carriage return. The characters before your margin will be filled by blanks unless you have changed your default fill character (see the Zap (z) command).
Your left margin is constrained to lie between 1 and your right margin.
This command defines your right margin in the same manner as vl defined your left margin. Your right margin defines the point at which filling (automatic generation of a carriage return) will occur on text entry if you have option fill on (f+).
Your right margin is constrained to lie between your left margin and column 1000.
This command causes your screen to be scrolled. If you specify a negative quantity then the scroll will be backward and if you specify a positive quantity then the scroll will be forward. This command always causes an immediate refresh of your screen. This allows you to look at snap shots of your screen during the execution of an until (or any list of commands). The command:
u20 s/^/+/
would only display the final version of the line you modified when the editor finished execution. The command:
u20 s/^/+/vs0
would give you a snap shot after each iteration of the substitute command.
You may set your tab stops at every 2, 4 or 8 characters on the screen. The default is 4.
When given without arguments this command will switch to the next hardware supported screen size. If the number is given it will switch to
Not affected.
Not affected.
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