2.2 A Few tricks

2.2.1 File names

You started to save your document. There are a few things to know about that and some rules to follow.
There are a few general rules which help to overcome problems still existing between the "Windows" and "Unix" world (and, of course, "Apple" does also contribute.
Always write all file names in one kind of letter cases. Either EVERYTHING IN CAPITAL LETTERS or everything in lower case letters. Lower case letters are to be preferred.
The reason for this is, that Unix discriminates between the two types, whereas Windows does not. File names like HomePage.html or homepage.html are all the same to Windows, but are different for Unix. Since your pages sooner or later are routed through a Unix machine, not discriminating between upper and lower case letters invites trouble.
This is bad enough for normal PC usage, but it is worse for HTML, because the file names are also used for the hyperlinks. Links that work here, may not work there if one machine doesn't care about lower and upper cases and another one does.
Microsoft, of course, is aware of this and since they don't want you to use any other system, some Windows operating systems change your cases all by themselves and in an unpredictable way. This is not easy to deal with; a good idea (with certain draw backs) is to automatically convert file names to e.g. lower case letters whenever files are moved.
Never, never ever use special symbols (like the German "Umlaute" ä, ö, ü) in file names. Your PC and your program might be familiar with those symbols, but others are not - for sure.

2.2.2 Prefixes

Make up your mind if you want to use .htm or .html as a prefix to file names, and, especially important, make up the mind of HoTMetaL Pro 5 which will automatically generates one or the other depending on what you install in "Tools" - "Options" - "Files" as default use. (Default means that prefix chosen by the program if you do not type it in yourself).
Again, the hyperlinks depend on the proper prefix, so be careful on what you do.
By now, it is most common to use "html".

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