1. Following is the syntax for static route
route interface-name IP-netmask gateway metric
Here metric means the no. of hops to reach to the gateway(which will be normally 1 i.e. next hop) OR it means the number of Hops to reach to destination..If it is for reaching destination how we can define the number of Hops .Sometimes if we are accessing some internet site and we will not be aware about the path it take to reach the destination and the number of hops required because the number of hops may change depending upon path availability.
2. Secondly in case of Dynamic routing e.g. RIP .As the document says that PIX can receive routing updates from other devices but can not distribute routing updates to other devices.Will it includes the routes generated within PIX.I mean to say PIX will have its own interfaces IP adresses and these network also need to be advertized to other device.Will these routes also cannot be ditributed to other devices OR it mean only that the PIX cannot forward the routes to other device which it has received from one device.