Problem: Add spaces: Attachmentpoint,galvanisedD-ring,onthechest

Spaces added: Attachment point, galvanised D-ring, on the chest
This text is missing some spaces, please add them: HowdoIchangemyemailpreference?
How do I change my email preference?
input question: Fix spacing: Ihaveshortorangehairandbrowneyes.

output answer: I have short orange hair and brown eyes.
Problem: Thesidedooristhesamethicknessasthesidewalls
What's a sentence that uses these characters?
-
The side door is the same thickness as the side walls
Add spaces: (IfIneedtobecorrected,e.g.thatitistheotherwayround,i.e.thatLosIncasheardValens'versionbeforetheycopiedit,pleasemailmeonthissubjecttoerik(at)lakjer.dk-substitute(at)withtheusual"@".)

Answer: (If I need to be corrected, e.g. that it is the other way round, i.e. that Los Incas heard Valens' version before they copied it, please mail me on this subject to erik(at)lakjer.dk - substitute (at) with the usual "@".)
This text is missing some spaces, please add them: VersionS:withoutnut,externalhexagonatthebottom
Version S: without nut, external hexagon at the bottom