IEG meta/iast conversion

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This issue devoted to comments regarding the conversion of the Cologne digitization ieg.txt of the Indian Epigraphical Glossary.

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IAST issues

The text contains words which are in Dravidian language(s), as well as Sanskrit words. In the Dravidian
words there are several consonants which in print form have a diaresis beneath the Latin letter. Since
there are no unicode code points of this form, I've used the 'with line beneath' Unicode characters.
For instance:

displays as

There is one such Dravidian character, described as 'Dravidian cerebral voiced fricative' which occurs
100+ times, and for which no Unicode representation was coded:

This was left in its AS form as l13:

Another minor point is that I used 'ṃ' for anusvara, instead of the author's ṁ.

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Sections of the text

The digitization includes not only the main section of entries, but apparently all of the text. There are
the following sections:

; TITLE
; DEDICATION
; CONTENTS
; PREFACE
; SPECIAL ABBREVIATION
; GENERAL ABBREVIATIONS
; SYSTEM OF TRANSLITERATION
; ENTRIES
; APPENDIX I
; APPENDIX II
; APPENDIX III
; INDEX
; ADDITIONS AND CORRECTIONS

Problematic headwords

The approximately 8000 headwords identified include about 6800 in the main section, and 1150 in the
three Appendices.

The 700+ headwords from the second appendix TAX NAMES IN DRAVIDIANLANGUAGES are problematic.
They are almost exclusively non-Sanskrit words. Currently these Dravidian words make their presences
felt in our headword compendiums such as sanhw1 and hwnorm1c. There are also several words in
the main section that seem problematic, for instance words with SLP1 spelling ending in 'E'. For instance,

In such cases, where the author specifically names a Sanskrit word, perhaps we should use the
Sanskrit word as the 'key1'.

There are also some English words in the headword list, for instance 'diestruck', from the 3rd appendix
NAMES OF COINS, METAL WEIGHTS:

As with the Dravidian words, the inclusion of these words in our lists of Sanskrit words is misleading.

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Suggested Enhancement: abbreviations

There are digitized sections on abbreviations in the preface. These could provide the basis for <ab> markup that would facilitate tooltips for users.

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Markup

Aside from the meta-line markup, the only markup added is for line breaks.
<div n="lb"> for simple line break, and <div n="P"> for indented line breaks.

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The converted form has now been installed at Cologne.