Editing MIRC scripting language (section)

===Global variables===
*May contain up to 4,150 (950 prior to mIRC 6.32) bytes of data including its name (however due to line-length limitations in mIRC's scripting parser, a maximum of 4,146 bytes can be assigned explicitly using /set or /var&nbsp;— this number decreasing as the variable's name grows longer)
*Cannot store NUL (ASCII 0) or trailing spaces
*Globally accessible
*Do not automatically unset unless a switch is used (stored automatically in a mIRC initialization file)
*Prefixed with <code>%</code> (e.g. <code>%Variable</code>)
*Created using the <code>set</code> command or <code>var -g</code> or <code>%Variable = value</code> notation