dtrans.chDffTrns =  "OTS"
or
dtrans.chDffTrns, "OUn"
default is "OU2" set in zero.c


diffuse fields are enetered into the active beams within 
metdif.d

hydrogenic species are discussed in hydrogen.txt

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routines

metdif
adds energy to outward beams

MakeDiffuse
prepares continua, does not add energy to outward beams

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variables

SummdCon.SummedCon[i] is sum of interactive fields

contains 
rfield.flux[i] 
otsCom.otslin[i] 
otsCom.otscon[i] 

otsCom.outlin[i] 
outward lines, included in ionizing radiation

otsCom.outcon[i] 
outward portion of continuum, incremented in metdif

each cell has associate with it character descriptions
of lines of continua there:  these are:
LineLabl.chLineLabel[j] ,
LineLabl.chContLabel[j] );