20.4 HOW_TO

[ADVANCED\]HOW_TO solve a simple problem

Ask IMAGER informations to help you solving your problem, expressed in a natural way. Examples

   HOW do i subtract continuum ?
   HOW do i control the display ?

Rules:

   - simple words ("do" "i" "?" "the", etc...) are ignored. You can just
     type them to have a normal syntax in your question.
   - all significant words (e.g. "subtract" and "continuum") must be
     found to have a matching topic.
   - significant words use exact matching. "continuum" is not the same as
     "cont".
   - partial match is possible if a significant word ends up by *.
     "cont*" will match "continuum".
   - if no topic matches all significant words, a list of partial matches
     is given to guide you. Use a simpler question with less significant
     words among those proposed.

HOW_TO ?
will list all topics