| Test 001: | | Extract the second spine in a file. |
| Test 002: | | Extract the first two spines in a file. |
| Test 003: | | Extract the first two spines in a file using a spine range. |
| Test 004: | | Extract the last two spines in a file. |
| Test 005: | | Extract the last two spines in a file by range. |
| Test 006: | | Extract the first two spines in data, but reverse their ordering in output. |
| Test 007: | | Extract the first two spines in reverse using range. |
| Test 008: | | Extract the first two spines in reverse using range. |
| Test 009: | | Duplicate an extracted spine. |
| Test 010: | | Extract the penultimate spine. |
| Test 011: | | Extract the penultimate spine using alternate notation. |
| Test 012: | | Extract the spine before the penultimate spine. |
| Test 013: | | Exclude the second spine from being extracted. |
| Test 014: | | Remove all except the last two spines. |
| Test 015: | | Extract all **b spines. |
| Test 016: | | Extract first and last spine in file. |
| Test 017: | | Extract a spine which splits into subspines. |
| Test 018: | | Extract a spine which splits into subspines, also duplicating it. |
| Test 019: | | Extract a complex spine, duplicating it as well as adding a blank spine between the copies to preserve valid humdrum syntax. |
| Test 020: | | Extract a spine which uses *x will remove the "x" in the output. |
| Test 021: | | Extracting a pair of spines with mutual *x manipulators will preserver *x markers. |
| Test 022: | | Extracting a pair of spines in reverse with mutual *x manipulators will preserver *x markers. |
| Test 023: | | Multiple copies of spines with *x manipulators will only preserve them if all repetitons of spines are paired to the left. |
| Test 024: | | Extract pair of *x spines and an extra copy of only one of the spines will cause the *x in the extra copy to be removed. |
| Test 025: | | Extracting spines which don't have matching *x will remove unmatched *x's. |
| Test 026: | | Reversing spines will always preserve *x manipulators. |
| Test 027: | | Extract two spines with splits and joins. |
| Test 028: | | Extract two spines with splits and joins which are not strictly allowed. |
| Test 029: | | Extract a spine which does not start/stop at the same time as other spines. |
| Test 030: | | Extracting two partial spines. |
| Test 031: | | Extracting two partial spines, preserving their relative positions. |
| Test 032: | | Reverse spines grouped by **kern data. |
| Test 033: | | Reverse spines grouped by **kern data, with the first spine not a **kern spine. |
| Test 034: | | Reverse spines grouped by **num spines. |
| Test 035: | | Extract only the "a" portion of a spine. |
| Test 036: | | Extract only the "b" portion of a spine. |
| Test 037: | | Extract both the "a" and "b" sections into separate spines. |
| Test 038: | | Extract both the "a" and "b" sections in reverse order. |
| Test 039: | | Expand all spines which contain a *^ manipulator. |
| Test 040: | | Extract a secondary sub-spine, duplicating primary spine data when no sub-spines. |
| Test 041: | | Extract a secondary sub-spine, using null tokens when no sub-spines. |
| Test 042: | | Extract a secondary sub-spine, using rests when no sub-spines. |
| Test 043: | | Extract a non-existant secondary sub-spine using rests. |
| Test 044: | | Extract a non-existant secondary sub-spine using rests without interpretation marking "yy". |
| Test 045: | | Extract co-spine information along with a spine. |
| Test 046: | | Extract co-spine information along with a spine. |
| Test 047: | | Extract co-spine information along with a spine and its duplicate. |
| Test 048: | | Extract co-spine information along with a spines in reverse order. |
| Test 049: | | Extract co-spine information, ignoring rests in **kern data. |
| Test 050: | | Extract co-spine information for the third spine of music. |
