Names of Variables and Functions

We should remember that Mathcad really supports only Greek and Latin letters. Our strategies to heal reddening variable names that contain reserved characters (blanks) are non-documented. Therefore, this technique may not work in next Mathcad versions. If we cannot do without Russian characters, then a user may cover Latin names with the pictures of Russian characters, and MAS allows us to remove any restriction from the variable names. Thus, Fig. 6.125 shows computation of a temperature difference in which the variables contains tops , - and, subscripts, in and out, superscripts, 2 and located one over another without horizontal shift. 

The secret in Fig. 6.125 is that the real names of 11 and 12 are invisible and a user view pictures of the variables and the formulae. Such trick does not work in a Worksheet but is applicable to a WebSheet. As mentioned in Sect. 6.2.2, the document requires minimum comments if the variable names are conventional for the specialists - it is sufficient to name the document and refer to the description in HTML. Possibly, this recommendation of naming convention, if implemented, is superfluous (or reduntant) because the variable names speak for themselves and for the document. 

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Returning to the point of Sect. 6.2 we can contend that the best comments are right, indicating names of variables and functions were fixed long ago on the definite quantity in a definite branch of science. It wUl be enough to name such a worksheet and that will be clear without comments. 

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