Three more questions

// include lib:
#include <acknex.h>
#include <default.c>
#include <strio.c>

// an empty string:
STRING* str_file = "#999";				// used to read the stuff from the file
// document strings:
STRING* document_str = "notes.txt";			// the name of the document file
STRING* document_page = "#999";				// same as above
STRING* text_str = "#999";				// used to display text

// documents stuff:
var document_id = 0;					// used to read document ID from external file

// background for the text:
PANEL* documentPan = {
	// set it's layer:
	layer = 1;
	// set it's bmap:
	bmap = "#340x450x24";
	// flags:
	flags = SHOW | UNTOUCHABLE;
}

// document description text:
TEXT* doc_desc_txt = {
	// no strings:
	strings = 0;
	// set layer:
	layer = 2;
	// set font:
	font = "Arial#18i";
	// set flags:
	flags = SHOW | LIGHT | WWRAP;
}

// document description text:
TEXT* doc_debug_txt = {
	// no strings:
	strings = 0;
	// set layer:
	layer = 2;
	// set font:
	font = "Arial#18i";
	// set flags:
	flags = SHOW | LIGHT | WWRAP;
}

// reads a string from file and puts it to global pointer:
function file_for_str(var fhandle){
	// read string from file, don't have to be comma separrated:
	var result = file_str_read(fhandle, str_file);
	// copy string into the debug text:
	str_cpy((doc_debug_txt.pstring)[0], str_file);
	// convert the string to right format:
	str_replaceall((doc_debug_txt.pstring)[0], "_", " ");
	str_replaceall((doc_debug_txt.pstring)[0], "\\\\n", "\n");
	// if we succeeded:
	if(result != -1){
		// if we were able to read data from the file, use var_for_name to pass the value to global pointer:
		var d = var_for_name(str_file);
		// if we weren't able to read data:
		if(d == 0){
			// write it down in diag:
			diag("\nUnkwon string or var given:");
			// write it down in diag:
			diag(_chr(str_file));
		}
	}
	// return result:
	return(result);
}

// laod document title, pages and maximum pages by ID
function loadDoc(var id){
	// open the document file:
	var fhandle = file_open_read(document_str);
	// if the file was null, safe return this function:
	if(fhandle == NULL){ return(0); }
	// variables:
	var i, a;
	// cycle throw all documents:
	for(a = 0; a < 1; a++){
		// get global string/variable from the file:
		i = file_for_str(fhandle);
		// if result was -1, we're at the end of the file:
		if(i == -1){ break; }
		// if the id fetched from the file matched the ID we're searching for:
		if(document_id == id){
			// load pages with maximum apge variable:
			for(i = 0; i < 1; i++){
				// load page of the document:
				file_for_str(fhandle);
				// convert the string to right format:
				str_replaceall(document_page, "_", " ");
				// convert the string to right format:
				str_replaceall(document_page, "\\\\n", "\n");
				// copy the currect page to the corresponding page array:
				str_cpy(text_str, document_page);
			}
			// break the loop:
			break;
		}
	}
	// close the document file:
	file_close(fhandle);
	// if we succeeded here, return 1:
	return(1);
}

// toggle the currect document:
function loadText(){
	// copy currect page:
	str_cpy((doc_desc_txt.pstring)[0], text_str);
	// make description visible:
	set(doc_desc_txt, SHOW);
}

// document's title is clicked in choice panel:
function titleClicked(){
	// load document with real value:
	loadDoc(1);
	// load text into the text (lol):
	loadText();
}

// main function:
void main(){
	// limit fps:
	fps_max = 60;
	// load empty level:
	level_load(NULL);
	// wait for while:
	wait(3);
	// set delemeter:
	str_cpy(delimit_str, ";");
	// load text from the .txt file:
	titleClicked();
	// loop:
	while(!key_esc){
		// show current documents ID:
		DEBUG_VAR(document_id, 10);
		// set notebook at the center of the screen:
		documentPan.pos_x = (screen_size.x / 2) - (bmap_width(documentPan.bmap) / 2) + 150;
		documentPan.pos_y = (screen_size.y / 2) - (bmap_height(documentPan.bmap) / 2);
		// set proper position for text itself:
		doc_desc_txt.pos_x = documentPan.pos_x + 15;
		doc_desc_txt.pos_y = documentPan.pos_y + 15;
		// set the size for the text (description) - used by WWRAP:
		doc_desc_txt.size_x = bmap_width(documentPan.bmap) - 25;
		doc_desc_txt.size_y = bmap_height(documentPan.bmap) - 25;
		// set debug text:
		doc_debug_txt.pos_x = 45;
		doc_debug_txt.pos_y = doc_desc_txt.pos_y;
		// set the size for the text (description) - used by WWRAP:
		doc_debug_txt.size_x = 300;
		doc_debug_txt.size_y = 500;
		// wait one frame:
		wait(1);
	}
	// exit:
	sys_exit("");
}

// set it's layer:
layer = 1;

// no strings:
strings = 0;

// wait one frame:
wait(1);

STRING *new_string ( char *text )
{
   STRING *string = str_create ( text );
   return string;
}

str_cpy(globalStr, new_string("Hello?");

str_cpy(globalStr, "Hello?");

STRING *strResult = new_string ( "hello" );
...
str_remove ( strResult );