index (e.g. 12) or index line (e.g. 11:18) in an array Indices of the selected array elements of the first dimension. Format: "ind1" (single index)," ind1:" (from ind1 up to the last index), ":ind1" (from the first index up to ind1), "ind1:ind2" (from ind1 up to ind2). Example: 8, :4, 19:, 7:12. Indices of the selected array elements of the second dimension. Format: "ind1" (single index)," ind1:" (from ind1 up to the last index), ":ind1" (from the first index up to ind1), "ind1:ind2" (from ind1 up to ind2). Example: 8, :4, 19:, 7:12. Indices of the selected array elements of the third dimension. Format: "ind1" (single index)," ind1:" (from ind1 up to the last index), ":ind1" (from the first index up to ind1), "ind1:ind2" (from ind1 up to ind2). Example: 8, :4, 19:, 7:12. Base number, which gives the index of the vector's first element (sometimes 1 instead of 0)