Yes it is searchable.
It is downloadable from http://dl03.magix.net/manual_designerprox16_en.pdf for version 16.3.
MagiXara stupidly put this as a link into Help > PDF Manual so everytime you want to read sometime, MagiXara expects you to download it all over!?! earlier versions unpacked it into C:\Program Files\Xara\Xara Designer Pro X\16\HelpAndSupport\ENG\ and linked to the local file!
I raised this as a Dear Xara but, like most other things, no reply.
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