Point vs dot: when to use what?
"Point" is usually used when dealing with decimal numbers, that is an abbreviation of "decimal point", for example:
1.25 would be pronounced: "One point two five"
In aviation - a safety critical environment with lots of radio traffic and many non-english speakers this would be pronounced:
"Wun desceemal two fife", [One decimal two five], simply because this has been found to convey the correct meaning to someone on the other end of a radio transmission. Similarly [just for fun...] . Three is pronounced "Tree", but I digress...
So:
The number 3.42 Point...
the amount €156.76 One hundred and fifty six, seventy six [Euro]
the IP address 1.92.34.76 Point or decimal, useful if reading to some one over the phone / radio, as above...
the enumeration 1. paragraph Point . Also in section headings 1.1.1 = "Section one point one point one"
the regular sentence Just because. Full stop or 'Period' - if necessary (USA)!
the unusual sentence Do. Not. Ask. Bad grammar, I might use an ellipsis to convey a brief pause for emphasis: "Do... Not... Ask!"
the abbreviation St. Germain Full stop - normally omitted in UK as now considered archaic, i.e. Mr Bloggs in UK (I must be getting old because I still use it!), so probably 'Period' as its use carries more favour in the US: Mr. Bloggs.
the abbreviation Main St. Full stop, as above
the URL stackoverflow.com Dot, as in "Dot Com" (XYZ.com), or "Dot Co, Dot UK" (XYZ.co.uk)