any way to paste/repeat a increment net label number?
for example I want to place 20 net label named from LED01 to LED20
thanks
I have no KiCad here but how Ins key works for you?
This is also already mentioned in the Getting Started in KiCad tutorial. Chapter 6.3.
Tip:
In many places in KiCad, pressing Insert will repeat the last action. The location of the new item will be shifted and the numbering incremented automatically, as applicable. In the Symbol Editor, this can be used to place a large number of pins quickly. In the Schematic Editor, it can be used to repeatedly place a component, or to label a large component’s pins with numbered labels. Insert can be useful in the Footprint and Board Editors as well.
For info
never found the “insert” key on a Mac keyboard there are “workarounds” but none work
Am I missing something or just dumb? 
thank you very much, repeat last action increment the net label number automatically. Anyway it can be easier to have a paste special function like altium, where you can repeat with many options
It’s faster and more convenient to use a pin helper
You can also modify prefixes or suffixes in batches by finding and replacing them
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I never used altium, and don’t know how that would work. But if you have a good idea of how to improve KiCad, you can always make a feature request on gitlab. Adding some (mock-up or real) screenshots can help to clarify your intentions. but before creating a new issue on gitlab (either bug report or feature requests) you should always search through the open issues to find whether something similar is already reported.