# Unity: White line at camera meaning

I'm a new comer to Unity. In Unity, when I click to main camera in Hierarchy view. I see 6 lines: one blue, one red, one green and three white. I know red/green/white lines for (x,y,z) location but I don't know what the meaning of 3 white lines is.

When I resize scene view I see that white lines change respectively. And at some points, three white line same with three color line as image below:

Please explain for me. Thanks :)

• don't know if you just misspoke or didn't notice them in the picture, but there are 4 white lines, not 3 :P – jhocking Sep 2 '14 at 16:15
• @jhocking ah. yes. 4 lines :D just because i think "white lines" have some relationship with three color lines, so my brain works as 3 lines :D – hqt Sep 2 '14 at 17:06