These correspond to levels 2 through 6 respectively. If base is 3 and max is 5, then only mipmap levels 8x1, 4x1 and 2x1 are loaded. However, if max is 7 then an error is returned and nothing is loaded since max is larger than the highest mipmap level which is, in this case, 6. See the glTexImage1D reference page for a description of the acceptable values for type parameter. See the glDrawPixels reference page for a description of the acceptable values for level parameter.
Parameters target Specifies the target texture.
The glDrawPixels subroutine, glTexImage1D subroutine, glTexImage2D subroutine, glTexImage3D subroutine, gluBuild1DMipmaps subroutine, gluBuild2DMipmaps subroutine, gluBuild3DMipmaps subroutine, gluErrorString subroutine, glGetTexImage subroutine, glGetTexLevelParameter subroutine, gluBuild2DMipmapLevels subroutine and gluBuild3DMipmapLevels subroutine.