Convert to Mixed Case    ICR (6266)

This API converts text from any form to a modified
mix text format.  This API replaces an older API $$MIX^LEXXM (ICR 5781) which
converted text to mix text using hard coded rules found in a series of Lexicon
namespace routines. This API still uses rules to convert text to mixed case
but the rules are stored in the TOKENS file #757.07 which is much easier to
maintain.

Examples:

Input:    arthropathy in behcet's syndrome
involving other specified sites

Output:   Arthropathy in Behcet's Syndrome
involving other specified sites

Input:    24 hour esophageal ph study

Output:   24 hour Esophageal pH Study