I'm routing a PCB board with Altium. Today I find when my mouse hover on the pads, it shows some shadowed "key" symbols. What's the meaning of them?

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The "key" symbol means that the specific track/pad/component is in locked position, so it is unmovable. Right click on the [specific item \$ \longrightarrow \$ properties \$ \longrightarrow \$ uncheck locked checkbox] and the "key" symbols will be gone.

  • 1
    \$\begingroup\$ Yes, you are right, the component is "locked". \$\endgroup\$ – diverger Mar 25 '15 at 9:14

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