| I | IP(I) | u | definition |
| 1 | NTF | u | number of triangles / regions |
| 2 | NVF | u | number of vertices |
| 3 | NBF | u | number of edges |
| 4 | NDF | u | number of degrees of freedom |
| 5 | IFIRST | u | initialization switch |
| 6 | IPROB | u | problem type |
| 7 | ITASK | u | problem task |
| 8 | ISPD | u | symmetric / nonsymmetric switch |
| 9 | METHOD | u | preconditioner options |
| 10 | MXCG | u | maximum conjugate gradient iterations |
| 11 | MXNWTT | u | maximum damped Newton iterations |
| 12 | ISING | u | switch for singular Neumann problem |
| 18 | IRTYPE | u | refinement / coarsening options |
| 19 | IERRSW | u | error recovery switch |
| 20 | IADAPT | u | mesh generation option switch |
| 21 | IREFN | u | uniform refinement control |
| 22 | NDTRGT | u | target value for number of vertices |
| 24 | MFLAG | parallel error flag | |
| 25 | IFLAG | error flag | |
| 27 | NEWNTF | number of elements owned by processor | |
| 28 | NEWNVF | number of vertices owned by processor | |
| 29 | NEWNBF | number of edges owned by processor | |
| 30 | NEWNDF | number of degrees of freedom owned by processor | |
| 31 | NVV | number of interface vertices | |
| 32 | NBB | number of interface edges | |
| 33 | NDD | number of interface degrees of freedom | |
| 34 | NVI | number of coarse interface vertices | |
| 35 | NBI | number of coarse interface edges | |
| 36 | NDI | number of coarse degrees of freedom | |
| 37 | NTG | global number of elements | |
| 38 | NVG | global number of vertices | |
| 39 | NBG | global number of edges | |
| 40 | NDG | global number of degrees of freedom | |
| 41 | IUSRSW | u | USRCMD switch |
| 42 | MODE | u | ATEST mode switch |
| 43 | NGRAPH | u | number of graphics windows |
| 44 | FDEVCE | u | TRIPLT graphics device |
| 45 | GDEVCE | u | GPHPLT graphics device |
| 46 | JDEVCE | u | INPLT graphics device |
| 47 | MPIRGN | u | region for printing and graphics |
| 48 | MPISW | u | MPI switch |
| 49 | NPROC | number of processes | |
| 50 | IRGN | individual process number | |
| 51 | MXCOLR | u | maximum number of colors |
| 52 | IFUN | u | alternate function switch for TRIPLT |
| 53 | INPLSW | u | alternate graph switch for INPLT |
| 54 | IGRSW | u | alternate graph switch for GPHPLT |
| 56 | NCON | u | number of contours |
| 57 | ICONT | u | continuity switch |
| 58 | ISCALE | u | scale option switch |
| 59 | LINES | u | line drawing option switch |
| 60 | NUMBRS | u | numbering option switch |
| 61 | NX | u | |
| 62 | NY | u | (NX,NY,NZ) |
| 63 | NZ | u | is the viewing perspective for TRIPLT |
| 64 | MX | u | |
| 65 | MY | u | (MX,MY,MZ) |
| 66 | MZ | u | is the viewing perspective for GPHPLT |
| 68 | ICRSN | u | graphics coarsening switch |
| 69 | ITRGT | u | target size of graphics mesh |
| 71 | NVDD | total number of interface vertices | |
| 72 | LIPATH | length of IPATH array | |
| 76 | NEF | number of error functions | |
| 77 | NGF | number of grid functions | |
| 78 | NDL | order of error recovery systems | |
| 79 | IEVALS | number of function evaluations on last call | |
| 80 | ITNUM | number of Newton iterations on last call | |
| 82 | MAXPTH | u | number of columns in the array IPATH |
| 83 | MAXT | u | number of columns in the array ITNODE |
| 84 | MAXV | u | length of the arrays VX and VY |
| 85 | MAXD | u | length of grid function arrays |
| 86 | MAXB | u | number of columns in the array IBNDRY |
| 90 | NDF | order of the linear system | |
| 91 | NB | number of blocks in the linear system | |
| 92 | LENJA | length of JA array | |
| 93 | LENAD | length of diagonal part A array | |
| 94 | LENAOD | length of upper / lower triangular A array | |
| 95 | LENJU | maximum length of JU array | |
| 96 | LENUOD | maximum length of upper / lower triangular U array | |
| 97 | LENJU0 | length of JU array | |
| 98 | LENU0 | length of U array | |
| 99 | LENJA0 | length of JA for HB decomposition | |
| 100 | LENJUC | length of JU for HB decomposition |