% Construct the path
350 350 m                     % Move to (100, 50)
350 400 l                     % Draw a line 
350 475 250 475 250 400 c     % Draw four cubic bezier curves
250 350 325 350 325 400 c     
325 437.5 275 437.5 275 400 c 
275 382 300 382 300 400 c     

% Set the graphics state
.5 G                          % Set the gray level to 50%
8 w                           % Set the width of the pen to 8 pts

% Stroke the path
S                             % Stroke the path without closing it