Editing Module:Val/units/doc (section)

== Interaction with Convert ==

Val and Convert share unit codes, but their units of measurement are different.
* Most of the wiki's unit codes are managed by {{tl|Convert}}. 
* Some very few unit codes here, like C and F, mean something different there. Val caters to Coulombs and Farads, while Convert caters to Celsius and Fahrenheit. Convert and Val ''unit codes'' are mostly identical, like they are for <kbd>degC</kbd> and for <kbd>degF</kbd>.
* Val could need ''any'' unit, while not all units are needed in conversions, so Val needs ''all'' of Convert's units and some of its own. 

* Sorting functionality is handled for Val by {{tlf|convert}}.)

* At Convert the procedure for defining a unit is much more involved than it is here, because there every unit defined must reference associated units, conversion factors, alternate spellings, and many other attributes. [[Module:Convert/data|An entry at Convert]] is defined as a multi-line, multi-attribute Lua table with its attendant syntax, and inside a larger Lua script.  Therefore Convert is more conservative about adding units.  Val may be more liberal in this respect if only because unit entry is simpler and "wikified".  Therefore [[WP:Be bold]]. Bold customization may be a worthwhile risk at Val/units, or it may get removed. Although units used in ''articles'' have definite stylistic standards, there remains room for depending on Val for markup (but see [[WP:Accessibility]] about color, link, and text). You may want to customize some Val unit codes that will automate some Val markup for special articles, the  ''talk page'', etc. See [[WP:HTML#formatting]] for possibilities.