ramp~

send it a number and it will generate a ramp~ - effectively a sample number to read arrays with something like a phasor~, but it just goes up and up.

I just had a look in the C code. In all honesty it's one of those objects that is in Pd but could be easily dealt with in Pd without the external. No disrespect to Tom Schouten, but it's basically a line~ with an offset, and a fixed rate i.e. it just generates a signal ramp with the right characteristics to patch it into tabread4~ and playback samples at their original pitch. The only exception is that it always starts from a specific value sent to the inlet.

There are quite a lot of externals like this (and some from me) where people coded something in C for convenience, but can be easily done in Pd without externals.

Here's a semi pddp formatted helpfile.