[Fix #116] Add documentation for spectrum

modules/spectrum/README.md

@@ -0,0 +1,92 @@
+Spectrum
+========
+
+Provides for easier use of 256 colors and effects.
+
+To learn more about text formatting, read [That 256 Color Thing][1].
+
+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-eigth                | no-font-eigth                |
+| 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][2].*
+
+  - [P.C. Shyamshankar](https://github.com/sykora)
+  - [Sorin Ionescu](https://github.com/sorin-ionescu)
+
+[1]: http://lucentbeing.com/blog/that-256-color-thing/
+[2]: https://github.com/sorin-ionescu/prezto/issues
+

modules/spectrum/init.zsh

@@ -1,5 +1,5 @@
 #
-# Provides for easier formatting and use of 256 colors.
+# Provides for easier use of 256 colors and effects.
 #
 # Authors:
 #   P.C. Shyamshankar <sykora@lucentbeing.com>