Hi, I am creating a 2D mesh for my crack problem. I need one edge to be discretized into 100 parts. So, I used border commands for creation. It creates mesh. but the issue here is, Freefem++ considers that edge as the boundary. So It looks like parts are divided. I also attaching my code.

```
real d = 0.05;
border L1(t=0,1) {x=-0.5; y=-0.5+(0.5-d)*t;}
border C1(t=0,1) {x=-0.5+0.5*t; y=-d+d*t;}
border CC1(t=0,1){x=0; y=0-0.5*t;}
border B1(t=0,1) {x=0-0.5*t; y=-0.5;}
border C2(t=0,1) {x =0-0.5*t;y = 0+d*t ;}
border L2(t=0,1) {x = -0.5; y=d+(0.5-d)*t; }
border T1(t=0,1) {x = -0.5+0.5*t; y=0.5; }
border CC2(t=0,1){x = 0; y=0.5-0.5*t;}
border C3(t=0,1) {x= 0+0.5*t; y=0; }
border R1(t=0,1) {x= 0.5; y=0-0.5*t;}
border B2(t=0,1) {x=0.5-0.5*t; y=-0.5;}
border T2(t=0,1) {x = 0+0.5*t; y=0.5;}
border R2(t=0,1) {x = 0.5;y=0.5-0.5*t; }
int n = 10;
//plot(L1(-n) + C1(-n) + CC1(-n) + B1(-n) + C2(-n) + L2(-n) +T1(-n)
// + CC2(-n) + C3(-n) + R1(-n) +B2(-n) + T2(-n) + R2(-n) , wait=true);
mesh Th = buildmesh(L1(-n) + C1(-n) + B1(-n) + C2(-n) + L2(-n) +T1(-n)
+ C3(-100) + R1(-20) +B2(-n) + T2(-n) +R2(-20) );
plot(Th, wait=true);
```

I don’t want C3 as a boundary. How should I use discretization without boundaries?

Previously I tried to import the mesh from GMSH but it not working.