Question: I'm using the following code to Draw an NSString on an NSImage.How can I make this text transparent 

```
text.draw(at:  NSZeroPoint, withAttributes: [NSFontAttributeName: font, NSForegroundColorAttributeName: NSColor.white])

```

How can I make this text transparent?

Please advice

Answer: 
```
$ sort -t_ -k5,5 -k8,8n file
abc_bla_bla_bla_reg0_bla_reg_1_0
abc_bla_bla_bla_reg0_bla_reg_2_0
abc_bla_bla_bla_reg0_bla_reg_5_0
abc_bla_bla_bla_reg0_bla_reg_10_0
abc_bla_bla_bla_reg0_bla_reg_15_0
abc_bla_bla_bla_reg2_bla_reg_7_0
abc_bla_bla_bla_reg2_bla_reg_9_0
abc_bla_bla_bla_reg2_bla_reg_15_0
abc_bla_bla_bla_reg3_bla_reg_3_0
abc_bla_bla_bla_reg3_bla_reg_5_0
abc_bla_bla_bla_reg3_bla_reg_26_0

```

That may or may not produce the output you expect if the `regN` value in the 5th column can include 2-digit numbers.
```
sort -V file

```

> 
> -V, --version-sort
>  natural sort of (version) numbers within text
> 
> 
>