General form:

FXXXXXXX N+ N- VNAM VALUE <m=val>

Examples:

F1 13 5 VSENS 5 m=2

n+ and n- are the positive and negative nodes, respectively. Current flow is from the positive node, through the source, to the negative node. vnam is the name of a voltage source through which the controlling current flows. The direction of positive controlling current flow is from the positive node, through the source, to the negative node of vnam. value is the current gain. m is an optional multiplier to the output current.