#import "MyObject.h" 

@implementation  MyObject

- ( IBAction )myAction:( id )sender
{

NSTextTab *tabStop1 = [[NSTextTab alloc] initWithType:NSLeftTabStopType
location: 10 ];
NSTextTab *tabStop2 = [[NSTextTab alloc] initWithType:NSLeftTabStopType
location: 20 ];
NSTextTab *tabStop3 = [[NSTextTab alloc] initWithType:NSLeftTabStopType
location: 30 ];
NSTextTab *tabStop4 = [[NSTextTab alloc] initWithType:NSLeftTabStopType
location: 20 ];

NSArray *arr = [NSArray arrayWithObjects:tabStop1,tabStop2, nil ];
NSMutableParagraphStyle *pStyle = [[NSMutableParagraphStyle alloc] init];

[pStyle setTabStops:arr];
NSLog([[pStyle tabStops] description]);
[pStyle addTabStop:tabStop3];
NSLog([[pStyle tabStops] description]);
[pStyle removeTabStop:tabStop4];
NSLog([[pStyle tabStops] description]);

}

@end