I just want first letter of every sentence to be capitalised, not highlighted or over 2 or more lines, but normal font
This is controlled by the “AutoCorrect” feature. Usually it is enabled by default.
Go to Tools>AutoCorrect>AutoCorrect Options, Options tab. You have two check boxes for Capitalize first letter of every sentence, one for initial typing, the other for modification of existing text. Check the ones you need (usually both).
It depends, of course, on the definition of a sentence. Consider that a full stop followed by space(s) marks the beginning of a new sentence.
EDIT
From various trials, auto capitalization occurs when a spacer (space, tab or return) is typed after the first word of a sentence. The first word is defined as the first run of characters after a period + spacer. There are exceptions: runs of 1 or 2 “letters” in first position followed by a period are not considered as a “word” but as an abbreviation and are not capitalized. Furthermore, their period (being part of the abbreviation) does not trigger start of sentence. Longer abbreviations which should not be capitalized must be edited manually. However, the built-in rules are probably more complex because etc. is recognised as an abbreviation (despite being 3 letters long) and disables capitalisation of following word while it may itself be capitalised if in first position.
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Thank you for that.
I’ve got to remember to put a full stop at the end of a line before hitting ‘Return’ for a new sentence. which i was’nt doing.
Then please mark my answer as solving the issue (key point being the definition of a “sentence”)