chore: better print type descriptions

printing/cups/cups.go

@@ -18,7 +18,7 @@ func (c *CUPS) Name() string {
 }
 
 func (c *CUPS) Description() string {
-	return "Print via CUPS attached printer. Use the Name of the printer (not the URI) as Endpoint."
+	return "Print via CUPS attached printer. Use the Name of the printer (not the URI) as endpoint. Check the S&D documentation for more information on how to set up CUPS."
 }
 
 var devicesRegex = regexp.MustCompile(`(?mU)device for (.+):`)

printing/dump/dump.go

@@ -13,7 +13,7 @@ func (r *Dump) Name() string {
 }
 
 func (r *Dump) Description() string {
-	return "Dumps the raw commands content to file. Endpoint should be the path to the file that will be written."
+	return "Dumps the raw ESC/POS commands to file. Endpoint should be the path to the file that will be written. Can be used to debug the raw commands."
 }
 
 func (r *Dump) AvailableEndpoints() (map[string]string, error) {

printing/preview/preview.go

@@ -20,7 +20,7 @@ func (r *Preview) Name() string {
 }
 
 func (r *Preview) Description() string {
-	return "Instead of printing show a window with the result."
+	return "Instead of printing show a window with the result. No endpoint needed."
 }
 
 func (r *Preview) AvailableEndpoints() (map[string]string, error) {

printing/remote/remote.go

@@ -16,7 +16,7 @@ func (r *Remote) Name() string {
 }
 
 func (r *Remote) Description() string {
-	return "Print via a remote server."
+	return "Print via a remote server. The endpoint should be the URL of the server. The raw ESC/POS printer commands will be sent as http post request."
 }
 
 func (r *Remote) AvailableEndpoints() (map[string]string, error) {

printing/serial/serial.go

@@ -17,7 +17,7 @@ func (s *Serial) Name() string {
 }
 
 func (s *Serial) Description() string {
-	return "Printing over Serial-Port (e.g. RS232). Endpoint is defined %PORT_NAME%:9600_N81_1. This specifies no parity, 8 data bits, 1 stop bit, a baudrate of 9600 and a 1 second delay between data chunks."
+	return "Printing over Serial-Port (e.g. RS232). Endpoint is defined %PORT_NAME%:9600_N81_1. This specifies a baudrate of 9600, no parity, 8 data bits, 1 stop bit, and a 1 second delay between data chunks. On Windows the port name is COM1, COM2, etc. On Linux/Unix it is most likely /dev/ttyUSB0, /dev/ttyUSB1, or similar."
 }
 
 func (s *Serial) AvailableEndpoints() (map[string]string, error) {

printing/usb/usb.go

@@ -33,7 +33,7 @@ func (c *USB) Name() string {
 }
 
 func (c *USB) Description() string {
-	return "Print directly to a USB attached printer. Use {vendor_id}:{product_id}:{endpoint_address} like 0416:5011:03. To find out how to get these values please take a look at the S&D documentation."
+	return "Print directly to a USB attached printer. Use {vendor_id}:{product_id}:{endpoint_address} like 0416:5011:03 as endpoint. To find out how to get these values please take a look at the S&D documentation."
 }
 
 func (c *USB) AvailableEndpoints() (map[string]string, error) {

printing/windows/direct.go

@@ -18,7 +18,7 @@ func (dp *Direct) Name() string {
 }
 
 func (dp *Direct) Description() string {
-	return "Directly print to a attached printer. Use the Name of the printer as Endpoint."
+	return "Directly print to a attached printer. Use the Name of the printer as endpoint."
 }
 
 func (dp *Direct) AvailableEndpoints() (map[string]string, error) {