symbol.type

9.16: adda/type"symbol (includes char's and words):

. accessing arrays efficiently requires that all the items

be the same size or virtually so through dope pointers .

. one view of doc's is an arrray of line.ptr .

. if word.codes are all the same size (4 bytes)

then each word could hold not only the code, but also:

(

the size of the word's char string

,

a tag for whether this code is a word or a list (syntactic enclosure)

,

and, a tag for variants like

"( this is not a word

but a ptr to string of ascii or unicode .

)

) .

. 2 ways to structure codes to mean both spellings and definitions:

1: point to spelling and point to def';

2: point always to def, and have def point to spelling .

. each paragraph, sentence, or phrase

could have a trailer to keep odd-sized strings .

. along with being structured by lines,

a doc is also structured by a syntax.tree:

this is completely doable for prog'lang's;

and at least partially doable for natural lang .

. natural language has implicit.parenthetical containers to show syntax tree,

and while ideally you could have line.ptr's point at implicit.paren's;

sometimes the lines are better wrapped to fit the page;

so, the routine for selecting an entire line

is to traverse an index starting from one line.ptr

until the index equals the next line.ptr .

10.20: adda/type"symbol:

. obj'c's SEL.type is type symbol .

. value literals are quoted symbols .