Rename Menue "Set Tag"

Honestly, I don't see this being so important. It's a little obvious that setting a tag, can also set a null tag.

There are other people who are not as intelligent as you, for them it is helpful.

OP is correct. Not everybody is fluint in gcdroid'isch... 😁 Even the name "tag" could be considered ambiguous ; label / mark / colorize are all clearer. 

You speak from my soul :-)

For german people its more confused, because the word "Tag" means "day" 

Was würdet ihr vorschlagen? Markierung? Marker? Label? 

Marker setzen/löschen ist mein Vorschlag.