drscheme:basis:initialize-parameters

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`drscheme:basis:initialize-parameters`

(drscheme:basis:initialize-parameters custodian setting) -> void
custodian : custodian
setting : setting
This initializes the parameters for the current thread to enable evaluation in the language level specified by setting. The argument custodian is installed as the current custodian.
This procedure sets the following parameters:
1. break-enabled
2. compile-allow-set!-undefined
3. compile-allow-cond-fallthrough
4. current-eval
5. current-load
6. current-setting
7. current-custodian
8. current-exception-handler
9. current-namespace
10. current-zodiac-namespace
11. current-print
12. current-load-relative-directory
13. current-require-relative-collection
14. error-print-width
15. error-value->string-handler
16. global-port-print-handler
17. print-graph
18. print-struct
19. read-case-sensitive
20. read-curly-brace-as-paren
21. read-square-bracket-as-paren
22. use-compiled-file-kinds
It also sets these Zodiac parameters, which control how code is generated:
1. aries:signal-undefined
2. aries:signal-not-boolean
3. zodiac:allow-reader-quasiquote
4. zodiac:disallow-untagged-inexact-numbers
5. zodiac:allow-improper-lists
It also sets these mzlib. parameters,
1. mzlib:print-convert:constructor-style-printing
2. mzlib:print-convert:quasi-read-style-printing
3. mzlib:print-convert:show-sharing
4. mzlib:print-convert:whole/fractional-exact-numbers
5. mzlib:print-convert:abbreviate-cons-as-list
6. mzlib:pretty-print:pretty-print-show-inexactness
Additionally, zodiac:reset-previous-attribute is called wih the arguments #f and #f, unless the language is MrEd Debug, in which case it is called with #f and #t.
Additionally, the following built in MzScheme primitives may be replaced with version that perform checking, depending on the language level. The replacment only happens in the teaching language levels, (Beginner, Intermediate and Advanced). For more details see plt/collects/userspce/ricedefr.ss.
```
  <= < > >=
  = + * /
  cons
  set-cdr!
  list*
  append
  append!
```
Additionally, in the non-teaching levels, the variables: argv and program are set.

PLT