Possibility to remove part of description from sharing.

Everything between <Hide start> and <Hide end> should not be shared.

<Hide start>

This should be removed from sharing

<Hide end>

This should not be removed from sharing

If there is no <Hide end> match → we should hide everything after in current scope.

So if <Hide start> is in table cell → we should hide everything after in cell but not outside cell.

<Hide start>

There is not matching “hide macro” but still this should be removed from sharing.