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Indrajit Raychaudhuri d80e393f78 general: Reformat documentation with better formatting and wording

General purpose reformating and rewording in (a few places). This should
also make markdown linting happier.

Prefer back-ticks wherever useful and use `console` for code blocks to
be executed on terminal.

Also, update references links wherever possible (including update from
'http://' to 'https://').

2021-05-05 12:21:04 -05:00

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Spectrum

Provides for easier use of 256 colors and effects.

To learn more about text formatting, read A Guide to 256 Color Codes.

Variables

BG provides background colors.
FG provides foreground colors.
FX provides effects.

Background and Foreground

Terminals support 8, 16, 88, and 256 colors. Check if a terminal supports 256 colors with tput colors before use.

The following colors are supported.

0 to 255
black
red
green
yellow
blue
magenta
cyan
white

Effects

Though there are many effects, most terminals support at least bold formatting.

Not all effects work on all terminals; use them sparingly.

Enable	Disable
	none
	normal
bold	no-bold
faint	no-faint
standout	no-standout
underline	no-underline
blink	no-blink
fast-blink	no-fast-blink
reverse	no-reverse
conceal	no-conceal
strikethrough	no-strikethrough
gothic	no-gothic
double-underline	no-double-underline
proportional	no-proportional
overline	no-overline

	no-border
border-rectangle	no-border-rectangle
border-circle	no-border-circle

	no-ideogram-marking
underline-or-right	no-underline-or-right
double-underline-or-right	no-double-underline-or-right
overline-or-left	no-overline-or-left
double-overline-or-left	no-double-overline-or-left
stress	no-stress

	font-default
font-first	no-font-first
font-second	no-font-second
font-third	no-font-third
font-fourth	no-font-fourth
font-fifth	no-font-fifth
font-sixth	no-font-sixth
font-seventh	no-font-seventh
font-eighth	no-font-eighth
font-ninth	no-font-ninth

Plain Text

Use $BG[none], $FG[none], or $FX[none] to turn off formatting.

Authors

The authors of this module should be contacted via the issue tracker.

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