changing speed within a cycle using vline:


[metro 1]
|
|   [r to-float]
|   |
[f  ]           [enter your new speed here(
|               |
[t f f]        [* 44.1]
|     |         |
|     [+ 44.1]
|     |\
|     | [s to-float]
|     |
[pack]
|
[$1, $2 1(
|
[vline~]
|
[tabread4~]