Runes are used phonetically, so most of the time you should shorten double-letters to single-letters ("Hello" would become "helo"). All the appropriate runes are bound to the appropriate keys, so you can type freely without worrying about which rune you're using. However, a few runes which represent diphthongs which are unused in Modern English are bound to the SHIFT-number row. They are as follows: !-th, @-eo, #-ng, $-ɶ, %-æ, ^-ia/io, &-ea, *-kk. (-st. Additionally, in Old English, there are two types of "g"s, a soft "g" (which is bound to the "g" key), as in "sage", and a hard "g" (which is bound to the ")" key), as in "saga".
Keys 1-7 also include the different Roman numerals (I, V, X, L, C, D, M), which can be combined to make up a number (from what I can tell, the Anglo-Saxons probably used Roman numerals or tally marks - most likely the former).
Runes for Family Use: User Manual
This font should be used with either caps lock or all lowercase, the former with serifs and the latter more realistic. As there is no runic "Z", typing one will instead provide stan, for "St". The numbers 0 - 9 provide other runes, listed below:
0: þorn "þ" "th"
1: eihwaz " ï "
2: yngvi "ŋ" "ng"
3: gyfu "/x/" "ch"
4: ear "ea"
5: kealk "kk" "ck"
6: ger "j"
7: os "o"
8: ac "a"
9: haglaz "h"
Just use shift on numbers for the caps lock version of those.
Covering the Unicode "Runic" letter set (from U+16a0 to U+16f0), except for the subsets "Tolkienian extensions" and "Cryptogrammic letters". Including Scandinavian runic numerals (number keys, U+0030 to U+0039). Additional runic punctuation marks, alternative glyphs, and private-use characters have been ascribed to free slots in "Latin Extended-D" (U+a7d0 to U+a7de), such as the magical ligature rune Alu or frequent (or, frankly, more aesthetic) alloglyphs for e.g. Kauna, Jeran, Sigel, Ehwaz, Mannaz, Ingwaz, Dagaz/Dæg, Stan, and others. +++ This font has been designed to meet the highest standards of runic aesthetics, glyph regularity and harmony, as well as scientific usefulness. As a specific advantage over other available non-FontStruct runic fonts, this font will always be equal in height to letters of other popular fonts at the same point size (Times New Roman, Linux Libertine), so as not to cause trouble with line height e.g. when writing a scientific paper.This is a clone