typedef struct SCROLLABLELINE{
	TEXT* contentsTxt;
	struct SCROLLABLELINE* nextLine;
	struct SCROLLABLELINE* prevLine;
} SCROLLABLELINE;


typedef struct {
	int lines;
	int width;
	SCROLLABLELINE* firstLine;
} SCROLLABLETEXT;

function initText(SCROLLABLETEXT* curText, int numOfLines)
{
	curText.lines = numOfLines;
	curText.firstLine = line_create(...);//another way of doing this?
SCROLLABLELINE* curLine;
curLine = curText.firstLine;
	var count = 0;
	while(count < numOfLines)
	{//create [numOfLines] Lines:
		curLine.nextLine = line_create(...);
		curLine.nextLine.prevLine = curLine;
		curLine = curLine.nextLine;
		count += 1;
	}
}

typedef struct SCROLLABLELINE
{	TEXT* contentsTxt;
	struct SCROLLABLELINE* nextLine;
	struct SCROLLABLELINE* prevLine;
}SCROLLABLELINE;
//
//
typedef struct SCROLLABLETEXT
{	int lines;
	int width;
	SCROLLABLELINE* firstLine;
}SCROLLABLETEXT;
//
//
SCROLLABLETEXT* initText()
{
	SCROLLABLETEXT* header = malloc(sizeof(SCROLLABLETEXT));
	memset(header, 0, sizeof(SCROLLABLETEXT));			
	return(header);
}
//
//
SCROLLABLELINE* create_line(SCROLLABLETEXT* header, TEXT* contentsTxt);
{
	SCROLLABLELINE* thisline = malloc(sizeof(SCROLLABLELINE));
	thisline.contentsTxt = contentsTxt;
	thisline.prevLine = thisline.nextLine = NULL;
	//
	if(header.firstline==NULL)
		header.firstline = thisline;   //list was empty.
	else
	{
		SCROLLABLELINE* tmp_ptr = header.firstLine;
		while(tmp_ptr!=NULL)    //find last entry in list
		{
			if(tmp_ptr.nextLine==NULL)	break;	//found end of list
			tmp_ptr = tmp_ptr.nextLine;
		}
		tmp_ptr.nextLine = thisline;	//add to end of list and set
		thisline.prevLine = tmp_ptr;    //  link pointers both ways
	}
	header.lines++;
	//header.width = (whatever you need to do to get this value);
	return(thisline);
}
//
//
void delete_line(SCROLLABLETEXT* header, SCROLLABLELINE* thisline);
{
	if(header.firstLine==thisline)
	{	//first in list
		header.firstLine = thisline.next);
		thisline.nextLine->prevLine = NULL;
		header.lines--:
		//header.width = (any adjustments necessary);
		free(thisline);
		return;
	}
	//
	thisline.nextLine->prevLine = thisline.prevLine;
	thisline.prevLine->nextLine = thisline.nextLine;
}
//
////////////////  EXAMPLE USAGE...
//
SCROLLABLETEXT* TextData;
//
function eg-main()
{
	TextData = initText();
	...

	TEXT* ThisLineText = txt_create(blah);
	SCROLLABLETEXT* New_Line0 = create_line(TextData, LineText);

	...or

	SCROLLABLETEXT* New_Line0 = create_line(TextData, txt_create(blah));

	...
}