==After evaluation by users this proposal has been withdrawn==

The current specification means that anything after e.g. a {{{**}}} is bold. This will often lead to problems when these characters are used on their own. (e.g. {{{**}}} is often put in text to mean (refer to the point elsewhere). The potential problem is the same for other inline markup.

==Proposal==

The proposal is to ignore any symetrical inline double markup which does not immediately proceed a non whitespace character. ({{{**  // __ }}}) but not ({{{ [[ {{ }}})

That is:
{{{ ** refer to my letter previously }}}

would print as is, but

{{{ **refer to my letter

}}}
would come out as bold.

==Comment==
An even tighter requirement would logically be to insist the starting sequence would be 
{{{<whitespace><double-symbol><Non-white-space>}}}
and final sequence the reverse. But whilst, this is probably logical, this is not part of the proposal, because the chance of mistakenly starting a block of bold text should be low and so an isolated {{{'**'}}} should be ignored, but it should be easy to stop a bold sequence, so an isolated {{{**}}} when in a bold sequence should not be ignored.