var "L1"
            type        chooser
            label       "Use LIB1?  -----------------------------"
            default     0
            choices
                "Yes" "echo %L1PEL1%,%L1PER1%'|'%L1PEL2%,%L1PER2%'|'%L1PEL3%,%L1PER3%'|'%L1PEL4%,%L1PER4%'^'asm_flags=%L1-ASM%'|'avg_ins=%L1-AVGINS%'|'rank=%L1-RANK%'|'rd_len_cutoff=%L1-MAXREAD%'|'reverse_seq=%L1-revseq% > %in1%.in;"
                "No" ""

        var "L1-rank"
            type        number
            label       "order for use in assembly (rank) "
            min         1
            max         4
            default     1 

        panel
            var "L1PEL1"
                type        file
                label       "Read pair 1 Left"
                default     ""

            var "L1PER1"
                type        file
                label       "Right"
                default     ""

        panel
            var "L1PEL2"
                type        file
                label       "Read pair 2 Left"
                default     ""

            var "L1PER2"
                type        file
                label       "Right"
                default     ""

        panel
            var "L1PEL3"
                type        file
                label       "Read pair 3 Left"
                default     ""

            var "L1PER3"
                type        file
                label       "Right"
                default     ""

        panel
            var "L1PEL4"
                type        file
                label       "Read pair 4 Left"
                default     ""

            var "L1PER4"
                type        file
                label       "Right"
                default     ""

        var "L1-avgins"
            type        number
            label       "Avg. insert size"
            min         200
            max         10000
            default     300 

        var "L1-maxread"
            type        number
            label       "Max. read length"
            min         50
            max         20000
            default     150 

        var "L1-asm"
            type        combobox
            label       "Use reads for "
            default     2
            choices
                "contigs only"    "1"
                "scaffolds only"  "2"
                "contigs and scaffolds"    "3"

        var "L1-revseq"
            type        chooser
            label       "shoulds reads be reversed? (reverse_seq) "
            default     1
            choices
                "Yes"    "1"
                "No"     "0"