/usr/lib/pd/extra/ekext/hasc~-help.pd is in pd-ekext 0.1.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | #N canvas 1 52 450 300 10;
#X obj 109 101 hasc~;
#X text 78 43 Highest Apparent Spectral Component;
|