PERFECT! I was just looking for a way to have multiple 'default' entries for a grid that wouldn't be read by the model when placing initial temporary grids.
For example, I don't know what I am going to label my grids yet, and just want them to read "GRID".
If Revit took the word 'GRID' (or some other special character *, $, @, etc.) and ignored it altogether, I could then place multiple default grids without any labels until I had time to coordinate grid numbering with other parties. It would then save me time later because I would not run into the error of 'The name entered is already in use. Enter a unique name.' over and over again.
It would also be useful if I could change a grid in a specific view only. For example, change the grid tag from it's value to 'GRID' where I have the same section cut in multiple locations on multiple grids. Maybe in the view, have a checkbox option to simply apply the word 'GRID' if the section has been placed in more than one place using the 'reference other view' selector.
Note, that the same workaround of using a unicode separator also works for overwriting dimensions...
Don't kill me, I know its bad to overwrite dimensions but sometimes it is the only practicable option. For example, I have an manufacturers object that is 27" wide and this is just a placeholder and not the actual object as a pre-made model of it does not exist. I know that my actual object is really 33" wide and I need to dimension that somehow. I could modify the modeled object, or simply use a unicode separator in the dimension override after my 33" text. No need to explain to me how to adjust the modelled object and make it right, I know all about that, I am just using that as an example. Another example would be a dimension that really doesn't tie to anything else and it is just there for information during construction of something. The Revit dimension read 6'-3" but it is actually supposed to be 6'-3 1/2". So, I select the dimension and override it and enter 6'-3 1/2" in the overide box and then rightclick in the box and add a unicode seperator. I usually select 'RS'
There are however, numerous occasions where this can be used, but it's kind of like fire... it's a powerful and useful tool, but if you play with it too much, you'll eventually get burned.