.nr _0 \n(c. .\" This version has had comments stripped; an unstripped version is available. .de (x .ds |X x .if \\n(.$ \ . ds |X \\$1 .am %\\*(|X )x .sp \\n(xsu .. .de )x .ds |x \\n% .if \\n(.$ \ . ds |x \\$1 .if "\\*(|x"_" \ . ig .. .am %\\*(|X .. .if \w'\\$2'>(\\n(.l-\\n(.i-\\n(.k) \ . ti +\\n(xuu \\\\a\\\\t\\$2\\*(|x ... .rm |x .rm |X .. .de xp .br .@C 2 .ls 1 .vs \\n(.su*\\n($Ru .fi .ds |X x .if \\n(.$ \ . ds |X \\$1 .xl -(\\n(xuu+\w'...'u) .di |x .%\\*(|X .br .di .rm %\\*(|X .xl \\n($lu .rm |X .ev .nf .in 0 .ta \\n(.lu-\\n(xuuR \\n(.luR .|x .fi .in .rm |x .. .if \n(xu<=0 \ . nr xu 0.5i .nr c. \n(_0