The Layout occupies the largest portion of the main screen, at the lower-right. This is the area where system design actually occurs, with the placement & connection of Component Objects. Component Objects represent the individual hardware devices and signal processing blocks within the system. Other objects include Lines (for connecting components) and Text (for labeling the system). Component objects can be placed into the Layout from the Processing Library, the Object Toolbar, or the Processing Library Menu. A Property Sheet provides an editable table of attributes regarding the Layout and its associated objects. The Layout has fixed dimensions of 16384x16384 pixels (approx. 163.75" square). Therefore, horizontal & vertical scroll bars are used to navigate within the Layout. Zoom In/Out and a Bird's Eye View are also available as navigational aids, and can be accessed from the Layout Toolbar or View Menu. The Ruler and Grid may be turned on/off from the Layout Toolbar, and the background color of the Layout may be changed from the Format Toolbar. Grid Settings, such as snap-to-grid, grid spacing, and guideline spacing, are available from the Layout Menu. Minimize, Down-Size, and Close buttons for the Layout are located in the upper-right corner of the main screen. Right-clicking over the Layout provides a pop-up menu of options.