Tags can be found in Preferences. The are substituted with values when a clip is pasted in FileMaker.

For instance, create a script with some comments like:

To avoid typos, you can even copy the tag from within 1-more-clip.

(in this example, the blue notebook is an emoJ)

Then copy it to 1-more-clip.

When you paste it back to FileMaker, the tags will be substituted:

The currently supported tags are:

TagSubstituted with
[[CURRENTDATE]]The current timestamp in the system format
[[CURRENTDATEISO]]The current timestamp in ISO format (YYYY-MM-DD HH:MM:SS GMT)
[[USERNAME]]The operating system user name (not FileMaker's)
[[PERSISTENTID]]The device persistent ID