can someome explain what this code actually does line by line. not really familiar with matlab but this code shows how a Y bus is formed. but i do not understand the lines of code. especially the for loop. thanks

Editor - C:\Users kartikeya Desktop\ybusformation.m a2.m x 23-4.m x 24. mxala. mx alb. m xviscircles. mx quadratic. mx ybusfo clc clear the command window clear all clears all buffer history FROMBUS TOBUS IMPEDANCE linedata = 11 0.05+0.151 0.10+0.30i 0.15+0.451 0.10+0.301 0.05+0.151]; fbus = (linedata (:,1)); 'first column of linedata stored in tbus tbus = (linedata(:,2)); second column of linedata stored in tbus b = max (max (fbus), max (tbus)); $ number of buses in the given system e = length (bus); e-length (linedata) no of transmittion A-zeros (e,b); tinitialization of A with dimensions of e, b Smatrix A formation Q for i=1:6 A(1, fbus (1))-1; A(1, tbus (i))=-1; end y=1./linedata (:,3); 3rd column of linedata stored in y y=diag(y); ybus=A'*y*A; tmultiplication of transpose of A, Y, and A disp (ybus) displays the ybus