Is there a page that explains all these abbreviations and symbols? P.H.? H? F.P.? That little arrow against the walls? <a href="http:&#x2F;&#x2F;maps.nls.uk&#x2F;townplans&#x2F;symbols.html" rel="nofollow">http:&#x2F;&#x2F;maps.nls.uk&#x2F;townplans&#x2F;symbols.html</a> only has a couple.