what does ''divided about halfway to the midrib'' mean?

0 Context? 0-

0I found this statement under the definition of 01i00cleft02i00 in Merriam-Webster dictionary.02br
02br
01b01font01sup^{00202sup}00cleft:02font02b02br
02br
01font00partially split or divided; 01i00specif02i00: divi

0 Here is an illustration of a 'cleft leaf':02br
01a00 05000 02a02br
02br
00 Here is an illustration of a leaf that is 01u00not02u00 a cleft leaf. Instead, you would say that the edge of the leaf is 01i00notched02i00:02br
01

0 BTW, see:02br
02br
01b00mid·rib02b02br
01b00:02b00 the central vein of a leaf02br
0500230hrefhttp://www.m-w.com/dictionary/midrib

0So that means:02br
02br
01font01b00divided 01i01u00about halfway02u02i00 to the central vein of a leaf.02b02font02br
02br
01b01font00What does 01i01u00about halfway02u02i00 mean in the above given

0 Approximately halfway, approximately to the halfway point (between the edge and the middle of the leaf)0-

0 01blockquote

02br
12br
11font10divided 11i11u10about halfway12u12i10 11b10to12b10 the central vein of a leaf.12font12br
12br
12blockquote

10What is the function of 01b01i00to02i02b00 in the

0 Preposition. 02br
02br
00 It's used in expressions of distance:02br
02br
00 from HERE to THERE02br
02br
00 to indicate the 01b00end point02b00. 0-

Hi everyone!

divided about halfway to the central vein of a leaf.

Can we say "Divided about halfway through the central vein of a leaf"? If both are possible, then what is the difference between the sentence having 'to' and the one having