started writing lexer after making string lib

string/docs/modify/replace.md

@@ -0,0 +1,22 @@
+# string_Replace
+Replace all occurences of `from` in `str` with `to`.
+
+## Arguments
+- str (string): the string to run a find and replace on.
+- from (string): the substring you want to replace.
+- to (string): the thing to replace all occurences of `from` with.
+
+## Returns
+result (string): the resulting string after the find and replace.
+
+## Example
+### Ground
+```python
+call !string_Replace "abacabacacacabacacacabac" "c" "b" &result
+println $result # "abababababababababababab"
+```
+
+### Solstice
+```c
+puts string_Replace("abacabacacacabacacacabac", "c", "b") // "abababababababababababab"
+```