Thank you James.

So, to clarify my understanding:
The old bundlePts node is redundant, or superceded and replaced.
Instead, under the "ArrayExt" menu, use the "bundleArray" node, in "Points" mode, as a replacement.

- Brian

bundleArray has three modes, Points, Numbers, or Objects. These correspond to input and output pointarrays, numarrays, or objarrays.
bundleArray grabs the 1st element of each input array, and outputs them sequentially in an array.
Then grabs the 2nd elements, and outputs them.
etcetera, to the ends of all of the input arrays.
If an input has less elements that the other inputs, EDIT: THE GRABS STOP. (=Short)
(slice(s) or cross section(s) of arrays?) (Some explanation by Max in multiprocess mode combinations? Short, NOT Long). (See James next post.)

So if the input array elements are arranged in Rows, the output would be the Column elements, sequentially. Or vice-versa.
For example, isoline u elements could be converted to isoline v elements.
Weft could be converted to Warp(???) EDIT: Well, see next two posts for elaboration.