RapidRefs has been around for a while, previously as its own command with its own button and everything. It is now integrated into the Reference Point command as an option.
What's it for? It excels at labeling ref points at the top and bottom of multiple riser nipples, as in those present along a main connecting many branch lines.
Look at this example:
I want reference points at the top and bottom of each riser nipple along that main. I want the tops to be labeled T1 – T8 and the bottoms to be labeled B1 – B8, starting from the right and going left.
Pick the Reference Point command. Select the Rapid reference points option and pick Insert.
Now, set the dialog box up as seen below. Notice the T and B as prefixes and the 1 and 1 as the starting IDs for the ref points. Also, this option is selected to insert ref points wherever riser nipples that connect Lines + Mains are found. Select the left arrow to indicate that you want the numbering to proceed in that direction.
Pick OK and select a window around the riser nipples you want to add them to. This will insert reference points at the top and bottom of each of the eight riser nipples on my drawing.
Notice that there are other options to allow you to fine tune the usage of this tool.
The H-Factor 
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