.ns .nr in .5i .de i0 .in \n(inu .. .de lp .tc  .tr  .i0 .ta \\$2/2u .in \\$1/2u .ti -\\$2/2u .. .de s1 .sp .10i .ne 2 .. .de s2 .sp .07i .. .de s3 .sp .07i .ne 2 .. .de fo 'ft R 'ps 10 'sp .40i 'tl ''- % -'' 'ft 'ps 'bp .. .de th .de x1 .tl '-''' 'ft R 'ps 10 'sp .50i 'tl '\\$1\|(\|\\$2\|)'\\$3'\\$1\|(\|\\$2\|)' 'ft 'ps 'sp .50i \\.. .wh -1i fo .wh 0 x1 'ft R 'ps 10 'vs 11p 'pn 1 'fi 'ad .bp .in \n(inu .dt .. .wh 0 x1 .de sh .i0 .s1 .ft B .ps 8 .ti 0 \\$1 .ft .ps .br .. .de it 'ft I 'li \\$1 'ft .. .de bd 'ft B \\$1 'ft R .. .de bn 'ft B \\$1 \\fR\\ .. .ds II \s-2INGRES\s0 .ds UU \s-2UNIX\s0 .ds GQ \s-2GEO-QUEL\s0 .ds +- \(+- .ds ** \(** .ds b \(*b .ds _ \(ul .ds - \(mi .ds a \(aa .ds v \(bv .ds p \(*p .ds r \(rg .ds g \(ga .ds | \| .ds X \(mu .ds u \(*m .ds G \(*G .ds > \(-> .de dt .ta .5i 1i 1.5i 2i 2.5i 3i 3.5i 4i 4.5i 6i .. .lg