4.1.2.3 List options

To add a value to the list, prefix the option name with an ‘add-’ and then specify the value to add. For example to add the URL filter use ‘add-filter url’. To remove a value from a list option prefix the option name with a ‘rem-’ and then specify the value to remove. For example, to remove the URL filter use ‘rem-filter url’. To remove all items from a list prefix the option name with a ‘clear-’ without specifying any value. For example, to remove all filters use ‘clear-filter’.

A list option can also be set directly, in which case it will be set to a single value. To directly set a list option to multiple values prefix the option name with a ‘lset-’ and separate each value with a ‘:’. For example, to use the URL and TeX filter use ‘lset-filter url:tex’. To include a literal ‘:’ use ‘\:’.