native read_file(const file, line, text, len, &txtlen = 0);
Path to open
Index of the line, starting to 0
String buffer to hold line read
Maximum size of string buffer
Number of characters written to the buffer
Reads line from file.
This native is expensive. Consider the use of new file natives (fopen(), fgets(), etc.)
if purpose is to read several lines of a file.
Returns index of next line, otherwise 0 when end of file is reached
Unable to read the file