When dealing with the correct formatting for MET and ENG measurements with their tags, the following format works best in most (but not all) cases.

 text<MET>_3 meters</MET><ENG>_10 feet</ENG>_text

Notice that the underscore ( _ ) indicates the only place where a space is used. This is very important to cleanly hiding of one of the units, both when viewing the Section in the Editor, and more importantly, when printing the Section.

The format needs to be reversed when the measurements start a sentence or fall at the end of a line. When this happens, the text on the next line would have a space in front of the measurement when tags are turned off. See example of the reversed format below:

 text_<MET>3 meters_</MET><ENG>10 feet_</ENG>text – (at the end of a line)

or

 <MET>3 meters_</MET><ENG>10 feet_</ENG>text – (at the beginning a sentence)

If you are uncertain about which format to use, try toggling (with tags off) first the MET units then the ENG units to see how each looks when the other is hidden. This is the only way to be certain of the results of your placement of tags, text and spaces.

This is an example of proper formatting for punctuation with English and Metric:

  text<MET>_3 meters<\MET><ENG>_10 feet<\ENG>,_text

When the format has to be reversed because the measurement falls at the end of the line, you must still duplicate the punctuation and accept the extra space that results when one of the units is toggled off.