The first extensive telegraph network was the visual telegraph. In 1791 the Frenchman Claude Chappe used a visual network (which consisted of a telescope, a clock, a codebook, and black and white panels) to send a message ten miles.
Page Content. The School Performance Profile provides the public with a comprehensive overview of student academic performance in every Pennsylvania public school building, including traditional public schools, charter schools, cyber charter schools and career and technology centers.
Overview tab [AX 2012] The Overview tab displays the most frequently used information for each record. To create a new record, press CTRL+N and then select or type values in the required fields. Required fields are highlighted by a wavy red underline and are typically on the Overview and General tabs.